Access data types in the database

There are 12 data types in the Access database: text types (Text, Memo), numeric types (Byte, Integer, Long Integer, Single, Double), date and time types (Date, Time, DateTime), Boolean type (Boolean), other types (Currency, Autonumber, Hyperlink, OLE Object, Attachment).

Data types in Access database

Text data type

• Text: Stores a text string up to 255 characters long.
• Memo: Stores long sections of text longer than 255 characters (up to 65,535 characters).

Numeric data type

• Byte: Stores an integer between 0 and 255.
• Integer: Stores an integer between -32,768 and 32,767.
• Long Integer: Stores an integer between -2,147,483,648 and 2,147,483,647.
• Single: Stores decimals with a precision of 7 significant digits.
• Double: Stores decimals with a precision of 15 significant digits.

Date and time data types

• Date: Stores date values ​​ranging from January 1, 100 to December 31, 9999.
• Time: Stores a time value ranging from 00:00:00 to 23:59:59.
• DateTime: Stores date and time values ​​in the same range as Date and Time.

Boolean data type

• Boolean: Stores a True or False value.

Other data types

• Currency: Stores currency values, including currency symbol and precision.
• Autonumber: A unique integer sequence automatically generated by Access.
• Hyperlink: Stores links to websites or files.
• OLE Object: Stores objects (such as images or documents) that are linked to other programs.
• Attachment: Stores the file or other binary data associated with the record.

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