Mostrar datos SQLite. Tutorial 46 en Español. Desarrollo de Aplicaciones Android.
Most of the Android database examples you will find on the web will usually contain only one table to demonstrate the basic database concepts. That's great, the only problem with this is that most non-trivial database implementations will contain more than one table. The standard database creation string for a single table will probably look a lot like the below:private static final String CREATE_TABLE_1 =" create table " + table1 +" (_id integer primary key autoincrement," +" title text not null, body text not null);"; Creating multiple sqlite database tables in Android Creating multiple sqlite database tables in Android
Bases de Datos en Android (III): Consultar/Recuperar registros | sgoliver.net blog En el anterior artículo del curso vimos todas las opciones disponibles a la hora de insertar, actualizar y eliminar datos de una base de datos SQLite en Android. En esta nueva entrega vamos a describir la última de las tareas importantes de tratamiento de datos que nos queda por ver, la selección y recuperación de datos. De forma análoga a lo que vimos para las sentencias de modificación de datos, vamos a tener dos opciones principales para recuperar registros de una base de datos SQLite en Android. La primera de ellas utilizando directamente un comando de selección SQL, y como segunda opción utilizando un método específico donde parametrizaremos la consulta a la base de datos. Bases de Datos en Android (III): Consultar/Recuperar registros | sgoliver.net blog
Ver si una tabla esta vacia Ver si una tabla esta vacia So I'm working on a game for android and I'm currently stuck at the 'load savegame' button in the main menu. This button calls methods that read data from the database and write it into a resource class from which on this data will be accessed. The problem is: I want to disable the load button if there are no rows in the tables, which means that no savegame exists. To do this I used the following method:
SQLite foreign key examples | How to create SQLite foreign keys SQLite foreign key examples | How to create SQLite foreign keys By Alvin Alexander. Last updated: Oct 8, 2013 SQLite foreign keys FAQ: Can you show me how to define foreign keys in a SQLite database table design? The SQLite database does support foreign keys, and its foreign key syntax is similar to other databases. Here's a quick SQLite foreign key example. A SQLite foreign key example
Foreign Key Support Foreign Key Support Small. Fast. Reliable.Choose any three.
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Android Tutorial 10 - Display Data from Database in List