SQLite

SQLite is widely used as a mainstream database in Android, but there are some differences between his SQL language and the SQL language used in general large databases, as summarized in this article:1. TOPIn SQL Server, we use top to get the top N

Create a SQLite database with a script Create the following two files in turn: 1) One bat file: Script.bat @ECHO offc:cd%homepath%/desktopsqlite3 test_db. DB Result.sql The Sqlite3 program can be downloaded from SQLite's official website to 2) A

http://blog.csdn.net/jin868/article/details/5961263Regular data uses fixed static data types, and SQLite uses Dynamic data types, which are automatically judged based on the value of the deposit. SQLite has the following five types of data:1.NULL:

Recently made a graduate design for a friend's child. With ASP. MVC5 + EntityFramework6 + SQL Server 2008.The result is good, friend said can not database, directly run? Immediately let me very tangled, do not need to install a database but can run,

The SQL Standard has a TRUNCATE table statement that clears all the contents of the table. However, SQLite does not support this statement. You can use "DELETE fromTableName" directly in SQLite. For most DBMS, using delete is not as fast as truncate,

Zeng: All programming is data-centric, and it makes sense.The so-called database database, no data called what database, then see how to insert data in the table.One insert data1 Creating a TableTo insert the data first, you need to create a table

I've already said how to open and close the database, this time to say how to execute the SQL statement to create a table.The function to use:Sqlite3_exec (sqlite3* db, const char *sql, Sqlite_callback callback, void *data, char **errmsg)Parameter:

wget http://www.sqlite.org/sqlite-3.6.16.tar.gzTAR-ZXVF sqlite-3.6.16.tar.gzCD sqlite-3.6.16./configureMake;make InstallLn-s/usr/local/bin/sqlite3/usr/bin/sqlite[Email protected] ipsecmc]# sqliteuser.dbSQLite version 3.6.16Enter '. Help ' for

In front of you. If you create a database, then we need to operate the database;But the Sqlite3 command can only operate one database at a time, what if there are multiple databases under the current path? This will require the use of additional

SQLite is a file database, unlike mysql,oracle and other databases have a lot of processes, many languages bullet-in into their own modules, Python, PHP, Ruby Support, As a small app or larger software does not need to connect to the database on the

1 "Open the database and create a table: //get the path to the database fileNSString *doc =[Nssearchpathfordirectoriesindomains (NSDocumentDirectory, Nsuserdomainmask, YES) lastobject]; NSString*filename = [Doc

Write a class that inherits from SqliteopenhelperThe system will automatically add the construction method, the OnCreate method, the Onupgrade methodWe need to upgrade the database when the data or table structure in the database is changed.This

The source of the data import can be output from other applications, or it can be a specified text file, where the specified text file is used.1. First, determine the imported data source, here is the text file to be imported, in a fixed format.2.

Sqlite Common functions1. Open the database:Description: Open a database, file name does not have to exist, if this file does not exist, SQLite will be created automatically. The first parameter refers to the file name, the second parameter is the

To learn SQLite, first of all to understand his advantages and disadvantages, what can be done, just more interested in learning, the network over a bit of information about (casually flip the information, their summary, there may be errors in the

1, SQLite3 is an open-source embedded relational database, portability is good, easy to use, memory overhead is relatively smallSQLite3 is untyped, meaning that you can save any type of data to any table of anyFields 2, SQLite3 commonly used 5 types

Using System.data.sqlite:http://system.data.sqlite.org/index.html/doc/trunk/www/downloads.wikiGet System.Data.SQLite.dll added to the project reference;Build tables, insert operations static void Main (string[] args) { Sqliteconnection conn

Knowledge Point Detailed: http://blog.csdn.net/zhaoyazhi2129/article/details/9025995Specific code:Mainactivity.javaPackage Com.example.android_sqlite;import Android.app.activity;import Android.os.bundle;import com.example.android

Description: After performing the Create SQLite database command under Windows, the database file will not be generated immediately and will not be generated until the table is created.1. Place the Sqlite3.exe file in any location (as in D:\tools)2.

Sometimes we use the database to store files, we need to use binary fields, the following columns are commonly used methods.1. Write binary dataSqlite3 * DB;int result;Char **errmsg =null;result = Sqlite3_open ("test.db", &db);if (Result! =