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What are the data types supported by SQLite?

Utpal Vishwas 365 17 May 2023

How can you implement database security in SQLite and what are some best practices?

sqlite databasesqlite
Updated 18 May 2023
Utpal Vishwas
Utpal Vishwas

Student

I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.

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1 Answers

Aryan Kumar
Aryan Kumar 18 May 2023
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SQLite supports the following data types:

  • INTEGER: An integer is a whole number without a decimal point.
  • REAL: A real number is a number with a decimal point.
  • TEXT: A text is a string of characters.
  • BLOB: A BLOB is a binary large object, which can store any type of data, including images, audio, and video.

In addition to these basic data types, SQLite also supports a number of other data types, such as:

  • DATETIME: A DATETIME is a date and time value.
  • TIME: A TIME is a time value.
  • DATE: A DATE is a date value.
  • NUMERIC: A NUMERIC is a number with a fixed precision.
  • CHAR: A CHAR is a fixed-length string.
  • VARCHAR: A VARCHAR is a variable-length string.
  • REALM: A REALM is a secure data type that can be used to store sensitive data.

The data type of a column is specified when the column is created. For example, the following statement creates a column called id of type INTEGER:

Code snippet

CREATE TABLE employees (
  id INTEGER PRIMARY KEY
);

Once a column has been created, its data type cannot be changed.

The data type of a column determines the range of values that can be stored in the column. For example, an INTEGER column can store any whole number, while a TEXT column can store any string of characters.

The data type of a column also affects the performance of queries that are performed on the column. For example, queries on INTEGER columns are typically faster than queries on TEXT columns.

When choosing a data type for a column, it is important to consider the range of values that will be stored in the column and the performance requirements of the queries that will be performed on the column.

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