![]() In this tutorial, you have learned how to create an SQLite database on disk and in memory from a Python program using sqlite3 module. Operators in SQLite Expressions in SQLite Create Database in SQLite Attach. import sqlite3ĭef create_connection (): """ create a database connection to a database that residesĬreate_connection() Code language: Python ( python ) Richard Hipp, SQLite was first released in. The following program creates an SQLite database in the memory. If you pass the file name as :memory: to the connect() function of the sqlite3 module, it will create a new database that resides in the memory (RAM) instead of a database file on disk. In this section, we will learn to connect SQLite databases, create table objects, and use them to run the SQL query. If you skip the folder path c:\sqlite\db, the program will create the database file in the current working directory (CWD). Let’s run the program and check the c:\sqlite\db folder. Note that the prefix r in the r"C:\sqlite\db\pythonsqlite.db" instructs Python that we are passing a raw string. Second, we pass the path of the database file to the create_connection() function to create the database. It is a good programming practice that you should always close the database connection when you complete with it. If everything is fine, we display the SQLite database version. In case an error occurs, we catch it within the try except block and display the error message. By using the Connection object, you can perform various database operations. This SQLite tutorial is designed for developers who want to use SQLite as the back-end database or to manage structured data in applications, including desktop. It returns a Connection object that represents the database. The connect() function opens a connection to an SQLite database. The first thing to do when working with a SQLite database (and most other Python database libraries) is to create a connection to it. Learn the basics of SQLite databases from SQLite dot commands to an example of their practical applications using the command line interface. Inside the function, we call the connect() function of the sqlite3 module. import sqlite3ĭef create_connection (db_file): """ create a database connection to a SQLite database """Ĭreate_connection( r"C:\sqlite\db\pythonsqlite.db")įirst, we define a function called create_connection() that connects to an SQLite database specified by the database file db_file. Sqlite - Free source code and tutorials for Software developers and Architects. Or you can place the database file a folder of your choice. SQLite reads and writes directly to ordinary disk. Note that you must create the c:\sqlite\db folder first before you execute the program. The great thing is that, unlike most other SQL databases, SQLite does not have a separate server process.
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