Now we are also going to query the database and present the result. I want to be able to open the database as readonly ( SQLITE_OPEN_READONLY) or as readwrite ( SQLITE_OPEN_READWRITE) This is the default behavior of sqlite3_open()Ģ. You need to provide the path to the database file or the name when using. I don’t want to create the database if it does not exist. This node creates a connection to a SQLite database file via its JDBC driver. I choose here to use the sqlite3_open_v2() function due to two main reasons:ġ. Check if we succeeded and report result to console Call sqlite3_open_v2() to open a read only connection to the SQLite database (test.db)ģ. Create necessary variables for connection, resource handle and the database file nameĢ.
In short this code will do the following:ġ.
path, Path, Text, Full path of the SQLite Database file that is returned only when the database is created. I will not go into how this is done here.Īfter the environment is setup we start with connecting to the SQLite database:Ĭonst char *dbname = "test.db" // Database file nameĭbhandle = sqlite3_open_v2(dbname, &conn, SQLITE_OPEN_READONLY, NULL) įprintf(stderr, "Could not open database: %s\n", sqlite3_errmsg(conn) ) Connection string used to access the SQLite database. is an implementation of the ADO.NET specification for the SQLite database. From the programmer's point of view it is a set of libraries and classes to work with database and other data sources.
I’m here going to demonstrate a simple connection and query to a SQLite database using C.įirst you need to download and build (if necessary) the SQLite code so you get the sqlite3.so (or sqlite3.lib on Windows) and the necessary header and c files (sqlite3.h, sqlite3.c). It is a specification that unifies access to relational databases, XML files, and other application data.
Software developer Dwayne Richard Hipp, while working for General Dynamics, wrote SQLite in early 2000 while on contract with the US Navy. As a cross-platform file format, you are able to copy between 32-bit and 64-bit storage systems. One of the most common ways to interact with a database is by querying: retrieving data based on some search parameters.
A disk file contains a comprehensive SQL database complete with multiple tables, views and triggers. Instead, it reads and writes right on disk files. SQLite is a unique SQL solution because it doesn't require a separate server process. In fact, SQLite is the world's most widely used database engine. SQLite has been built into every mobile device and almost every computer. SQLite's code is available within public domain making it free for use for every private or commercial purpose. It offers its users a high-performance, very dependable SQL database engine.
SQLite is a lightweight database management solution.