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SQLite Tutorial

SQLite is a popular relational database management system that allows you to store and manage data in a simple and efficient manner. It is widely used in mobile app development and as an embedded database for desktop applications. In this tutorial, we will learn about SQLite and how to use it to manage data.

Syntax

The basic syntax for creating a table in SQLite is as follows:

CREATE TABLE table_name (
   column1 datatype PRIMARY KEY,
   column2 datatype,
   column3 datatype,
   .....
   columnN datatype
);

Example

Suppose we want to create a table for storing employee data in SQLite. We can create the table using the following CREATE TABLE statement:

CREATE TABLE employees (
   id integer PRIMARY KEY,
   name text,
   email text,
   phone text
);

We can then insert data into the table using the INSERT INTO statement:

INSERT INTO employees (id, name, email, phone)
VALUES (1, "John Doe", "johndoe@example.com", "555-1234");

Output

To retrieve data from the employees table, we can use the SELECT statement:

SELECT * FROM employees;

This will output the following result:

1|John Doe|johndoe@example.com|555-1234

Explanation

In the example above, we created a table called employees with four columns: id, name, email, and phone. We set the id column as the primary key using the PRIMARY KEY constraint. We then inserted a row of data into the table using the INSERT INTO statement.

Finally, we retrieved the data from the employees table using the SELECT statement. The SELECT statement retrieves all columns (*) from the employees table.

Use

SQLite is a lightweight and efficient database management system that is easy to use and can be embedded in mobile apps and desktop applications. It is ideal for applications that require a small and efficient database management system.

Important Points

  • SQLite is a file-based database management system, meaning that each database is stored as a file on disk.
  • SQLite databases can be easily backed up or moved to other systems.
  • SQLite is not suitable for large-scale applications that require multiple users and high levels of concurrency.
  • It supports many popular programming languages such as C++, Java, Python, and Ruby.

Summary

In this tutorial, we learned about SQLite and how to use it to manage data. We covered the basic syntax for creating a table, inserting data into a table, and retrieving data from a table using the SELECT statement. We also discussed the use cases of SQLite and its important points. SQLite is a simple and efficient database management system that is widely used in mobile app development and as an embedded database in desktop applications.

SQL vs SQLite
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