android sqlite database tutorial

BoAndroidsqlite Database Initialization at startupMethod 1 has described a way to initialize a databaseIts database initialization is not a SQL statement, but a ready-made SQLite binary file for direct copy to the Android system's database path. On the one hand, I'm not so s

---------------------------------------------. JavaPackage com. example. sqlite;Import android. app. Activity;Import android. database. sqlite. SQLiteDatabase;Import android. OS. Bundle;Import

;Import Android.database.sqlite.SQLiteOpenHelper;/** * * @author Lin* SQLite Help class */public class Sqlite_persondb extends sqliteopenhelper{/*** SQLite Database construction method, used to define database name, database query result set,

Android SQLite Database Transaction learning, androidsqlite SQLite is a lightweight relational database built into the Android system. It is fast in operation and occupies a small amount of resources. Generally, only a few hundred

Package com. jk. service;/*** create and update the database version */import android. content. context; import android. database. sqlite. SQLiteDatabase; import android. database.

SQLite database storage: SQLite is a lightweight relational database, it is very fast operation, the use of small resources, usually only need hundreds of K of memory is sufficient, and therefore particularly suitable for mobile devices.First:Create a database. (

Yusong Momo introduces you to the database SQLite Of The World Of Game Development If the original Yusong Momo article is reprinted, please note: It is reprinted to my independent domain name blogYusong Momo program Research Institute, Original address: http://www.xuanyusong.com/archives/287 Database SQLite Introduct

As an Android app, you will inevitably deal with SQLite. With the continuous upgrading of the application, the original database structure may no longer adapt to the new features, this time, you need to upgrade the structure of the SQLite database.

();// transaction has been executed successfully}catch ( exceptione) {e.printstacktrace ();} finally{db.endtransaction ();// End Transaction}}); The above code is the standard use of transactions in Android, first call Sqlitedatabase's BeginTransaction () method to open a transaction, and then in an exception-caught code block to perform specific database operations, when all the operations are completed,

To manipulate the SQLite database on the Android real computer directly from the command line, you can do it directly through the ADB shell, but only if you have to get root privileges.In addition, the Android system is actually the Linux shell, this should be known, but under normal circumstances, in the/system/xbin/d

The use of embedded relational SQLite database storage data On the Android platform, an embedded relational database is integrated--sqlite,sqlite3 supports NULL, INTEGER, real (floating-point numbers), text (string literals), and BLOB (binary object) data types, although it

The database used in Android is an open source database SQLite database, the following is the main detailed introduction of the use of SQLite:An Introduction to SQLitewhen we write database applications, we need to consider the pr

This article illustrates a simple way for C # to access a SQLite database. Share to everyone for your reference, specific as follows: Download the latest version of SQLite (http://www.sqlite.org/download.html), other versions are also available, the version used here is Sqlite-3_6_6_1 A. After decompression copy C:\

SQLite is an open source database management system in an embedded system. It supports standard relational database query statement SQL syntax and Transaction (Transaction ), the default statement (similar to the stored proc of other DBMS ). On the Andrioid platform, only KB of memory is required. On the Android platf

limitations, and table-level locks, so there is no need for multi-threaded operation. Android data in a few hours table query may be time-consuming, will not lead to ANR, but more than 100ms will also make users feel delay and lag, can be put in the thread running, but sqlite in concurrency limitations, multithreading control is more troublesome, this time can use a single pool, Performing a DB operation i

Brief introduction:On the Android platform, an embedded relational database is inherited---sqlite.sqlite has cross-platform features that can be run on all major operating systems. SQLite implements independent transactions with exclusive and shared locks, so multiple processes can read data from the same database at t

During the unit test on Android, the function of adding data to the database is tested. The test function is as follows: Public void testadd (){ Studentdao = new studentdao (this. getcontext ()); Student = new student (1, "Lily", 20 ); Studentdao. Add (student ); Log. I (TAG, "testadd "); }The test was successful for the first time, but failed again. The error message is as follows:

If you don't talk much about it, directly add the code, and the comments in the Code are clear. Package mars.com; import android. app. activity; import android. content. contentvalues; import android. database. cursor; import android. d