MOBILE-2842 core: Interfaces for DB schemas

src/addon/calendar/providers/calendar.ts

@@ -23,6 +23,7 @@ import { CoreConstants } from '@core/constants';
 import { CoreLocalNotificationsProvider } from '@providers/local-notifications';
 import { CoreConfigProvider } from '@providers/config';
 import { ILocalNotification } from '@ionic-native/local-notifications';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle calendar events.
@@ -38,7 +39,7 @@ export class AddonCalendarProvider {
 
     // Variables for database.
     static EVENTS_TABLE = 'addon_calendar_events';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonCalendarProvider.EVENTS_TABLE,
             columns: [

src/addon/messages/providers/messages-offline.ts

@@ -17,6 +17,7 @@ import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreAppProvider } from '@providers/app';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle Offline messages.
@@ -29,7 +30,7 @@ export class AddonMessagesOfflineProvider {
     // Variables for database.
     static MESSAGES_TABLE = 'addon_messages_offline_messages'; // When group messaging isn't available or a new conversation starts.
     static CONVERSATION_MESSAGES_TABLE = 'addon_messages_offline_conversation_messages'; // Conversation messages.
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonMessagesOfflineProvider.MESSAGES_TABLE,
             columns: [

src/addon/mod/assign/providers/assign-offline.ts

@@ -18,6 +18,7 @@ import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline assign.
@@ -30,7 +31,7 @@ export class AddonModAssignOfflineProvider {
     // Variables for database.
     static SUBMISSIONS_TABLE = 'addon_mod_assign_submissions';
     static SUBMISSIONS_GRADES_TABLE = 'addon_mod_assign_submissions_grading';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModAssignOfflineProvider.SUBMISSIONS_TABLE,
             columns: [

src/addon/mod/choice/providers/offline.ts

@@ -14,6 +14,7 @@
 
 import { Injectable } from '@angular/core';
 import { CoreSitesProvider } from '@providers/sites';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline choices.
@@ -23,7 +24,7 @@ export class AddonModChoiceOfflineProvider {
 
     // Variables for database.
     static CHOICE_TABLE = 'addon_mod_choice_responses';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModChoiceOfflineProvider.CHOICE_TABLE,
             columns: [

src/addon/mod/data/providers/offline.ts

@@ -18,6 +18,7 @@ import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreFileProvider } from '@providers/file';
 import { CoreFileUploaderProvider } from '@core/fileuploader/providers/fileuploader';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle Offline data.
@@ -29,7 +30,7 @@ export class AddonModDataOfflineProvider {
 
     // Variables for database.
     static DATA_ENTRY_TABLE = 'addon_mod_data_entry';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModDataOfflineProvider.DATA_ENTRY_TABLE,
             columns: [

src/addon/mod/feedback/providers/offline.ts

@@ -17,6 +17,7 @@ import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle Offline feedback.
@@ -28,7 +29,7 @@ export class AddonModFeedbackOfflineProvider {
 
     // Variables for database.
     static FEEDBACK_TABLE = 'addon_mod_feedback_answers';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModFeedbackOfflineProvider.FEEDBACK_TABLE,
             columns: [

src/addon/mod/forum/providers/offline.ts

@@ -16,6 +16,7 @@ import { Injectable } from '@angular/core';
 import { CoreFileProvider } from '@providers/file';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline forum.
@@ -27,7 +28,7 @@ export class AddonModForumOfflineProvider {
     static DISCUSSIONS_TABLE = 'addon_mod_forum_discussions';
     static REPLIES_TABLE = 'addon_mod_forum_replies';
 
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModForumOfflineProvider.DISCUSSIONS_TABLE,
             columns: [

src/addon/mod/glossary/providers/offline.ts

@@ -17,6 +17,7 @@ import { CoreFileProvider } from '@providers/file';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline glossary.
@@ -27,7 +28,7 @@ export class AddonModGlossaryOfflineProvider {
     // Variables for database.
     static ENTRIES_TABLE = 'addon_mod_glossary_entrues';
 
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModGlossaryOfflineProvider.ENTRIES_TABLE,
             columns: [

src/addon/mod/lesson/providers/lesson-offline.ts

@@ -18,6 +18,7 @@ import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
 import { CoreUtilsProvider } from '@providers/utils/utils';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { AddonModLessonProvider } from './lesson';
 
 /**
@@ -31,7 +32,7 @@ export class AddonModLessonOfflineProvider {
     // Variables for database. We use lowercase in the names to match the WS responses.
     static RETAKES_TABLE = 'addon_mod_lesson_retakes';
     static PAGE_ATTEMPTS_TABLE = 'addon_mod_lesson_page_attempts';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModLessonOfflineProvider.RETAKES_TABLE,
             columns: [

src/addon/mod/lesson/providers/lesson-sync.ts

@@ -25,6 +25,7 @@ import { CoreUrlUtilsProvider } from '@providers/utils/url';
 import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreCourseProvider } from '@core/course/providers/course';
 import { CoreSyncBaseProvider } from '@classes/base-sync';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { AddonModLessonProvider } from './lesson';
 import { AddonModLessonOfflineProvider } from './lesson-offline';
 import { AddonModLessonPrefetchHandler } from './prefetch-handler';
@@ -58,7 +59,7 @@ export class AddonModLessonSyncProvider extends CoreSyncBaseProvider {
 
     // Variables for database.
     static RETAKES_FINISHED_TABLE = 'addon_mod_lesson_retakes_finished_sync';
-    protected tablesSchema = {
+    protected tablesSchema: SQLiteDBTableSchema = {
         name: AddonModLessonSyncProvider.RETAKES_FINISHED_TABLE,
         columns: [
             {

src/addon/mod/lesson/providers/lesson.ts

@@ -21,6 +21,7 @@ import { CoreDomUtilsProvider } from '@providers/utils/dom';
 import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreGradesProvider } from '@core/grades/providers/grades';
 import { CoreSiteWSPreSets } from '@classes/site';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { AddonModLessonOfflineProvider } from './lesson-offline';
 
 /**
@@ -155,7 +156,7 @@ export class AddonModLessonProvider {
 
     // Variables for database.
     static PASSWORD_TABLE = 'addon_mod_lesson_password';
-    protected tablesSchema = {
+    protected tablesSchema: SQLiteDBTableSchema = {
         name: AddonModLessonProvider.PASSWORD_TABLE,
         columns: [
             {

src/addon/mod/quiz/accessrules/password/providers/handler.ts

@@ -17,6 +17,7 @@ import { Injectable, Injector } from '@angular/core';
 import { CoreSitesProvider } from '@providers/sites';
 import { AddonModQuizAccessRuleHandler } from '../../../providers/access-rules-delegate';
 import { AddonModQuizAccessPasswordComponent } from '../component/password';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Handler to support password access rule.
@@ -25,7 +26,7 @@ import { AddonModQuizAccessPasswordComponent } from '../component/password';
 export class AddonModQuizAccessPasswordHandler implements AddonModQuizAccessRuleHandler {
     // Variables for database.
     static PASSWORD_TABLE = 'addon_mod_quiz_access_password';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: AddonModQuizAccessPasswordHandler.PASSWORD_TABLE,
         columns: [
             {

src/addon/mod/quiz/providers/quiz-offline.ts

@@ -21,7 +21,7 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreQuestionProvider } from '@core/question/providers/question';
 import { CoreQuestionBehaviourDelegate } from '@core/question/providers/behaviour-delegate';
 import { AddonModQuizProvider } from './quiz';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline quiz.
@@ -33,7 +33,7 @@ export class AddonModQuizOfflineProvider {
 
     // Variables for database.
     static ATTEMPTS_TABLE = 'addon_mod_quiz_attempts';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModQuizOfflineProvider.ATTEMPTS_TABLE,
             columns: [

src/addon/mod/scorm/providers/scorm-offline.ts

@@ -21,7 +21,7 @@ import { CoreTimeUtilsProvider } from '@providers/utils/time';
 import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreUserProvider } from '@core/user/providers/user';
 import { AddonModScormProvider } from './scorm';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline SCORM.
@@ -34,7 +34,7 @@ export class AddonModScormOfflineProvider {
     // Variables for database.
     static ATTEMPTS_TABLE = 'addon_mod_scorm_offline_attempts';
     static TRACKS_TABLE = 'addon_mod_scorm_offline_scos_tracks';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModScormOfflineProvider.ATTEMPTS_TABLE,
             columns: [

src/addon/mod/survey/providers/offline.ts

@@ -16,6 +16,7 @@ import { Injectable } from '@angular/core';
 import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle Offline survey.
@@ -27,7 +28,7 @@ export class AddonModSurveyOfflineProvider {
 
     // Variables for database.
     static SURVEY_TABLE = 'addon_mod_survey_answers';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModSurveyOfflineProvider.SURVEY_TABLE,
             columns: [

src/addon/mod/wiki/providers/wiki-offline.ts

@@ -15,6 +15,7 @@
 import { Injectable } from '@angular/core';
 import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline wiki.
@@ -26,7 +27,7 @@ export class AddonModWikiOfflineProvider {
 
     // Variables for database.
     static NEW_PAGES_TABLE = 'addon_mod_wiki_new_pages_store';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModWikiOfflineProvider.NEW_PAGES_TABLE,
             columns: [

src/addon/mod/workshop/providers/offline.ts

@@ -17,6 +17,7 @@ import { CoreFileProvider } from '@providers/file';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline workshop.
@@ -30,7 +31,7 @@ export class AddonModWorkshopOfflineProvider {
     static EVALUATE_SUBMISSIONS_TABLE = 'addon_mod_workshop_evaluate_submissions';
     static EVALUATE_ASSESSMENTS_TABLE = 'addon_mod_workshop_evaluate_assessments';
 
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonModWorkshopOfflineProvider.SUBMISSIONS_TABLE,
             columns: [

src/addon/notes/providers/notes-offline.ts

@@ -16,6 +16,7 @@ import { Injectable } from '@angular/core';
 import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline notes.
@@ -26,7 +27,7 @@ export class AddonNotesOfflineProvider {
 
     // Variables for database.
     static NOTES_TABLE = 'addon_notes_offline_notes';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonNotesOfflineProvider.NOTES_TABLE,
             columns: [

src/addon/pushnotifications/providers/pushnotifications.ts

@@ -28,6 +28,7 @@ import { CoreConfigProvider } from '@providers/config';
 import { CoreConstants } from '@core/constants';
 import { CoreConfigConstants } from '../../../configconstants';
 import { ILocalNotification } from '@ionic-native/local-notifications';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle push notifications.
@@ -41,7 +42,7 @@ export class AddonPushNotificationsProvider {
 
     // Variables for database.
     static BADGE_TABLE = 'addon_pushnotifications_badge';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: AddonPushNotificationsProvider.BADGE_TABLE,
             columns: [

src/classes/site.ts

@@ -15,7 +15,7 @@
 import { Injector } from '@angular/core';
 import { TranslateService } from '@ngx-translate/core';
 import { HttpClient } from '@angular/common/http';
-import { SQLiteDB } from './sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from './sqlitedb';
 import { CoreAppProvider } from '@providers/app';
 import { CoreDbProvider } from '@providers/db';
 import { CoreEventsProvider } from '@providers/events';
@@ -168,7 +168,7 @@ export class CoreSite {
     // Variables for the database.
     protected WS_CACHE_TABLE = 'wscache';
     protected CONFIG_TABLE = 'core_site_config';
-    protected tableSchemas = [
+    protected tableSchemas: SQLiteDBTableSchema[] = [
         {
             name: this.WS_CACHE_TABLE,
             columns: [

src/classes/sqlitedb.ts

@@ -15,6 +15,129 @@
 import { SQLite, SQLiteObject } from '@ionic-native/sqlite';
 import { Platform } from 'ionic-angular';
 
+/**
+ * Schema of a table.
+ */
+export interface SQLiteDBTableSchema {
+    /**
+     * The table name.
+     * @type {string}
+     */
+    name: string;
+
+    /**
+     * The columns to create in the table.
+     * @type {SQLiteDBColumnSchema[]}
+     */
+    columns: SQLiteDBColumnSchema[];
+
+    /**
+     * Names of columns that are primary key. Use it for compound primary keys.
+     * @type {string[]}
+     */
+    primaryKeys?: string[];
+
+    /**
+     * List of sets of unique columns. E.g: [['section', 'title'], ['author', 'title']].
+     * @type {string[][]}
+     */
+    uniqueKeys?: string[][];
+
+    /**
+     * List of foreign keys.
+     * @type {SQLiteDBForeignKeySchema[]}
+     */
+    foreignKeys?: SQLiteDBForeignKeySchema[];
+
+    /**
+     * Check constraint for the table.
+     * @type {string}
+     */
+    tableCheck?: string;
+}
+
+/**
+ * Schema of a column.
+ */
+export interface SQLiteDBColumnSchema {
+    /**
+     * Column's name.
+     * @type {string}
+     */
+    name: string;
+
+    /**
+     * Column's type.
+     * @type {string}
+     */
+    type?: 'INTEGER' | 'REAL' | 'TEXT' | 'BLOB';
+
+    /**
+     * Whether the column is a primary key. Use it only if primary key is a single column.
+     * @type {boolean}
+     */
+    primaryKey?: boolean;
+
+    /**
+     * Whether it should be autoincremented. Only if primaryKey is true.
+     * @type {boolean}
+     */
+    autoIncrement?: boolean;
+
+    /**
+     * True if column shouldn't be null.
+     * @type {boolean}
+     */
+    notNull?: boolean;
+
+    /**
+     * WWhether the column is unique.
+     * @type {boolean}
+     */
+    unique?: boolean;
+
+    /**
+     * Check constraint for the column.
+     * @type {string}
+     */
+    check?: string;
+
+    /**
+     * Default value for the column.
+     * @type {string}
+     */
+    default?: string;
+}
+
+/**
+ * Schema of a foreign key.
+ */
+export interface SQLiteDBForeignKeySchema {
+    /**
+     * Columns to include in this foreign key.
+     * @type {string[]}
+     */
+    columns: string[];
+
+    /**
+     * The external table referenced by this key.
+     * @type {string}
+     */
+    table: string;
+
+    /**
+     * List of referenced columns from the referenced table.
+     * @type {string[]}
+     */
+    foreignColumns?: string[];
+
+    /**
+     * Text with the actions to apply to the foreign key.
+     * @type {string}
+     */
+    actions?: string;
+}
+
 /**
  * Class to interact with the local database.
  *
@@ -43,27 +166,15 @@ export class SQLiteDB {
      * Helper function to create a table if it doesn't exist.
      *
      * @param {string} name The table name.
-     * @param {any[]} columns The columns to create in the table. Each column can have:
+     * @param {SQLiteDBColumnSchema[]} columns The columns to create in the table.
-     *                    * {string} name  Column's name.
-     *                    * {string} [type] Column's type.
-     *                    * {boolean} [primaryKey] If column is primary key. Use it only if primary key is a single column.
-     *                    * {boolean} [autoIncrement] Whether it should be autoincremented. Only if primaryKey is true.
-     *                    * {boolean} [notNull] True if column shouldn't be null.
-     *                    * {boolean} [unique] Whether the column is unique.
-     *                    * {string} [check] Check constraint for the column.
-     *                    * {string} [default] Default value for the column.
      * @param {string[]} [primaryKeys] Names of columns that are primary key. Use it for compound primary keys.
      * @param {string[][]} [uniqueKeys] List of sets of unique columns. E.g: [['section', 'title'], ['author', 'title']].
-     * @param {any[]} [foreignKeys] List of foreign keys. Each key can have:
+     * @param {SQLiteDBForeignKeySchema[]} [foreignKeys] List of foreign keys.
-     *                    * {string[]} columns Columns to include in this foreign key.
-     *                    * {string} table The external table referenced by this key.
-     *                    * {string[]} [foreignColumns] List of referenced columns from the referenced table.
-     *                    * {string} [actions] Text with the actions to apply to the foreign key.
      * @param {string} [tableCheck] Check constraint for the table.
      * @return SQL query.
      */
-    buildCreateTableSql(name: string, columns: any[], primaryKeys?: string[], uniqueKeys?: string[][], foreignKeys?: any[],
+    buildCreateTableSql(name: string, columns: SQLiteDBColumnSchema[], primaryKeys?: string[], uniqueKeys?: string[][],
-            tableCheck?: string): string {
+            foreignKeys?: SQLiteDBForeignKeySchema[], tableCheck?: string): string {
         const columnsSql = [];
         let sql = `CREATE TABLE IF NOT EXISTS ${name} (`;
 
@@ -207,27 +318,15 @@ export class SQLiteDB {
      * Create a table if it doesn't exist.
      *
      * @param {string} name The table name.
-     * @param {any[]} columns The columns to create in the table. Each column can have:
+     * @param {SQLiteDBColumnSchema[]} columns The columns to create in the table.
-     *                    * {string} name  Column's name.
-     *                    * {string} [type] Column's type.
-     *                    * {boolean} [primaryKey] If column is primary key. Use it only if primary key is a single column.
-     *                    * {boolean} [autoIncrement] Whether it should be autoincremented. Only if primaryKey is true.
-     *                    * {boolean} [notNull] True if column shouldn't be null.
-     *                    * {boolean} [unique] Whether the column is unique.
-     *                    * {string} [check] Check constraint for the column.
-     *                    * {string} [default] Default value for the column.
      * @param {string[]} [primaryKeys] Names of columns that are primary key. Use it for compound primary keys.
      * @param {string[][]} [uniqueKeys] List of sets of unique columns. E.g: [['section', 'title'], ['author', 'title']].
-     * @param {any[]} [foreignKeys] List of foreign keys. Each key can have:
+     * @param {SQLiteDBForeignKeySchema[]} [foreignKeys] List of foreign keys.
-     *                    * {string[]} columns Columns to include in this foreign key.
-     *                    * {string} table The external table referenced by this key.
-     *                    * {string[]} [foreignColumns] List of referenced columns from the referenced table.
-     *                    * {string} [actions] Text with the actions to apply to the foreign key.
      * @param {string} [tableCheck] Check constraint for the table.
      * @return {Promise<any>} Promise resolved when success.
      */
-    createTable(name: string, columns: any[], primaryKeys?: string[], uniqueKeys?: string[][], foreignKeys?: any[],
+    createTable(name: string, columns: SQLiteDBColumnSchema[], primaryKeys?: string[], uniqueKeys?: string[][],
-            tableCheck?: string): Promise<any> {
+            foreignKeys?: SQLiteDBForeignKeySchema[], tableCheck?: string): Promise<any> {
         const sql = this.buildCreateTableSql(name, columns, primaryKeys, uniqueKeys, foreignKeys, tableCheck);
 
         return this.execute(sql);
@@ -236,10 +335,10 @@ export class SQLiteDB {
     /**
      * Create a table if it doesn't exist from a schema.
      *
-     * @param {any} table Table schema.
+     * @param {SQLiteDBTableSchema} table Table schema.
      * @return {Promise<any>} Promise resolved when success.
      */
-    createTableFromSchema(table: any): Promise<any> {
+    createTableFromSchema(table: SQLiteDBTableSchema): Promise<any> {
         return this.createTable(table.name, table.columns, table.primaryKeys, table.uniqueKeys,
             table.foreignKeys, table.tableCheck);
     }
@@ -247,10 +346,10 @@ export class SQLiteDB {
     /**
      * Create several tables if they don't exist from a list of schemas.
      *
-     * @param {any[]} tables List of table schema.
+     * @param {SQLiteDBTableSchema[]} tables List of table schema.
      * @return {Promise<any>} Promise resolved when success.
      */
-    createTablesFromSchema(tables: any[]): Promise<any> {
+    createTablesFromSchema(tables: SQLiteDBTableSchema[]): Promise<any> {
         const promises = [];
         tables.forEach((table) => {
             promises.push(this.createTableFromSchema(table));

src/core/course/providers/course-offline.ts

@@ -14,6 +14,7 @@
 
 import { Injectable } from '@angular/core';
 import { CoreSitesProvider } from '@providers/sites';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to handle offline data for courses.
@@ -23,7 +24,7 @@ export class CoreCourseOfflineProvider {
 
     // Variables for database.
     static MANUAL_COMPLETION_TABLE = 'course_manual_completion';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: CoreCourseOfflineProvider.MANUAL_COMPLETION_TABLE,
             columns: [

src/core/course/providers/course.ts

@@ -23,6 +23,7 @@ import { CoreUtilsProvider } from '@providers/utils/utils';
 import { CoreSiteWSPreSets, CoreSite } from '@classes/site';
 import { CoreConstants } from '../../constants';
 import { CoreCourseOfflineProvider } from './course-offline';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service that provides some features regarding a course.
@@ -47,7 +48,7 @@ export class CoreCourseProvider {
 
     // Variables for database.
     protected COURSE_STATUS_TABLE = 'course_status';
-    protected courseStatusTableSchema = {
+    protected courseStatusTableSchema: SQLiteDBTableSchema = {
         name: this.COURSE_STATUS_TABLE,
         columns: [
             {

src/core/course/providers/module-prefetch-delegate.ts

@@ -27,6 +27,7 @@ import { CoreConstants } from '../../constants';
 import { Md5 } from 'ts-md5/dist/md5';
 import { Subject, BehaviorSubject, Subscription } from 'rxjs';
 import { CoreDelegate, CoreDelegateHandler } from '@classes/delegate';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Progress of downloading a list of modules.
@@ -202,7 +203,7 @@ export interface CoreCourseModulePrefetchHandler extends CoreDelegateHandler {
 export class CoreCourseModulePrefetchDelegate extends CoreDelegate {
     // Variables for database.
     protected CHECK_UPDATES_TIMES_TABLE = 'check_updates_times';
-    protected checkUpdatesTableSchema = {
+    protected checkUpdatesTableSchema: SQLiteDBTableSchema = {
         name: this.CHECK_UPDATES_TIMES_TABLE,
         columns: [
             {

src/core/emulator/providers/helper.ts

@@ -26,6 +26,7 @@ import { CoreTimeUtilsProvider } from '@providers/utils/time';
 import { FileTransferErrorMock } from './file-transfer';
 import { CoreEmulatorCaptureHelperProvider } from './capture-helper';
 import { CoreConstants } from '../../constants';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Helper service for the emulator feature. It also acts as an init handler.
@@ -40,7 +41,7 @@ export class CoreEmulatorHelperProvider implements CoreInitHandler {
 
     // Variables for database.
     protected LAST_RECEIVED_NOTIFICATION_TABLE = 'core_emulator_last_received_notification';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.LAST_RECEIVED_NOTIFICATION_TABLE,
             columns: [

src/core/emulator/providers/local-notifications.ts

@@ -17,7 +17,7 @@ import { LocalNotifications, ILocalNotification, ILocalNotificationAction } from
 import { CoreAppProvider } from '@providers/app';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { CoreUtilsProvider } from '@providers/utils/utils';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { CoreConstants } from '@core/constants';
 import { CoreConfigConstants } from '../../../configconstants';
 import * as moment from 'moment';
@@ -43,7 +43,7 @@ export class LocalNotificationsMock extends LocalNotifications {
 
     // Variables for database.
     protected DESKTOP_NOTIFS_TABLE = 'desktop_local_notifications';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: this.DESKTOP_NOTIFS_TABLE,
         columns: [
             {

src/core/question/providers/question.ts

@@ -17,6 +17,7 @@ import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreTimeUtilsProvider } from '@providers/utils/time';
 import { CoreUtilsProvider } from '@providers/utils/utils';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * An object to represent a question state.
@@ -63,7 +64,7 @@ export class CoreQuestionProvider {
     // Variables for database.
     protected QUESTION_TABLE = 'questions';
     protected QUESTION_ANSWERS_TABLE = 'question_answers';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.QUESTION_TABLE,
             columns: [

src/core/sharedfiles/providers/sharedfiles.ts

@@ -21,7 +21,7 @@ import { CoreSitesProvider } from '@providers/sites';
 import { CoreMimetypeUtilsProvider } from '@providers/utils/mimetype';
 import { CoreTextUtilsProvider } from '@providers/utils/text';
 import { Md5 } from 'ts-md5/dist/md5';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to share files with the app.
@@ -32,7 +32,7 @@ export class CoreSharedFilesProvider {
 
     // Variables for the database.
     protected SHARED_FILES_TABLE = 'shared_files';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: this.SHARED_FILES_TABLE,
         columns: [
             {

src/core/user/providers/user.ts

@@ -18,6 +18,7 @@ import { CoreLoggerProvider } from '@providers/logger';
 import { CoreSite } from '@classes/site';
 import { CoreSitesProvider } from '@providers/sites';
 import { CoreUtilsProvider } from '@providers/utils/utils';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Service to provide user functionalities.
@@ -31,7 +32,7 @@ export class CoreUserProvider {
 
     // Variables for database.
     protected USERS_TABLE = 'users';
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.USERS_TABLE,
             columns: [

src/providers/config.ts

@@ -14,7 +14,7 @@
 
 import { Injectable } from '@angular/core';
 import { CoreAppProvider } from './app';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Factory to provide access to dynamic and permanent config and settings.
@@ -24,7 +24,7 @@ import { SQLiteDB } from '@classes/sqlitedb';
 export class CoreConfigProvider {
     protected appDB: SQLiteDB;
     protected TABLE_NAME = 'core_config';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: this.TABLE_NAME,
         columns: [
             {

src/providers/cron.ts

@@ -19,7 +19,7 @@ import { CoreConfigProvider } from './config';
 import { CoreLoggerProvider } from './logger';
 import { CoreUtilsProvider } from './utils/utils';
 import { CoreConstants } from '@core/constants';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /**
  * Interface that all cron handlers must implement.
@@ -94,7 +94,7 @@ export class CoreCronDelegate {
 
     // Variables for database.
     protected CRON_TABLE = 'cron';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: this.CRON_TABLE,
         columns: [
             {

src/providers/filepool.ts

@@ -28,7 +28,7 @@ import { CoreTextUtilsProvider } from './utils/text';
 import { CoreTimeUtilsProvider } from './utils/time';
 import { CoreUrlUtilsProvider } from './utils/url';
 import { CoreUtilsProvider } from './utils/utils';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { CoreConstants } from '@core/constants';
 import { Md5 } from 'ts-md5/dist/md5';
 
@@ -254,7 +254,7 @@ export class CoreFilepoolProvider {
     protected FILES_TABLE = 'filepool_files'; // Downloaded files.
     protected LINKS_TABLE = 'filepool_files_links'; // Links between downloaded files and components.
     protected PACKAGES_TABLE = 'filepool_packages'; // Downloaded packages (sets of files).
-    protected appTablesSchema = [
+    protected appTablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.QUEUE_TABLE,
             columns: [
@@ -306,7 +306,7 @@ export class CoreFilepoolProvider {
             primaryKeys: ['siteId', 'fileId']
         }
     ];
-    protected sitesTablesSchema = [
+    protected sitesTablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.FILES_TABLE,
             columns: [

src/providers/local-notifications.ts

@@ -22,7 +22,7 @@ import { CoreEventsProvider } from './events';
 import { CoreLoggerProvider } from './logger';
 import { CoreTextUtilsProvider } from './utils/text';
 import { CoreUtilsProvider } from './utils/utils';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { CoreConstants } from '@core/constants';
 import { Subject, Subscription } from 'rxjs';
 
@@ -38,7 +38,7 @@ export class CoreLocalNotificationsProvider {
     protected SITES_TABLE = 'notification_sites'; // Store to asigne unique codes to each site.
     protected COMPONENTS_TABLE = 'notification_components'; // Store to asigne unique codes to each component.
     protected TRIGGERED_TABLE = 'notifications_triggered'; // Store to prevent re-triggering notifications.
-    protected tablesSchema = [
+    protected tablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.SITES_TABLE,
             columns: [

src/providers/sites.ts

@@ -25,7 +25,7 @@ import { CoreUtilsProvider } from './utils/utils';
 import { CoreConstants } from '@core/constants';
 import { CoreConfigConstants } from '../configconstants';
 import { CoreSite } from '@classes/site';
-import { SQLiteDB } from '@classes/sqlitedb';
+import { SQLiteDB, SQLiteDBTableSchema } from '@classes/sqlitedb';
 import { Md5 } from 'ts-md5/dist/md5';
 
 /**
@@ -143,7 +143,7 @@ export class CoreSitesProvider {
     // Variables for the database.
     protected SITES_TABLE = 'sites';
     protected CURRENT_SITE_TABLE = 'current_site';
-    protected appTablesSchema = [
+    protected appTablesSchema: SQLiteDBTableSchema[] = [
         {
             name: this.SITES_TABLE,
             columns: [
@@ -1251,18 +1251,18 @@ export class CoreSitesProvider {
     /**
      * Create a table in all the sites databases.
      *
-     * @param {any} table Table schema.
+     * @param {SQLiteDBTamableSchema} table Table schema.
      */
-    createTableFromSchema(table: any): void {
+    createTableFromSchema(table: SQLiteDBTableSchema): void {
         this.createTablesFromSchema([table]);
     }
 
     /**
      * Create several tables in all the sites databases.
      *
-     * @param {any[]} tables List of tables schema.
+     * @param {SQLiteDBTamableSchema[]} tables List of tables schema.
      */
-    createTablesFromSchema(tables: any[]): void {
+    createTablesFromSchema(tables: SQLiteDBTableSchema[]): void {
         // Add the tables to the list of schemas. This list is to create all the tables in new sites.
         this.siteTablesSchemas = this.siteTablesSchemas.concat(tables);
 

src/providers/sync.ts

@@ -15,6 +15,7 @@
 import { Injectable } from '@angular/core';
 import { CoreEventsProvider } from './events';
 import { CoreSitesProvider } from './sites';
+import { SQLiteDBTableSchema } from '@classes/sqlitedb';
 
 /*
  * Service that provides some features regarding synchronization.
@@ -24,7 +25,7 @@ export class CoreSyncProvider {
 
     // Variables for the database.
     protected SYNC_TABLE = 'sync';
-    protected tableSchema = {
+    protected tableSchema: SQLiteDBTableSchema = {
         name: this.SYNC_TABLE,
         columns: [
             {