MS ACCESS DATABASE DATA TYPES

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MS ACCESS DATABASE DATA TYPES

    Data Type 
    Use For 
    Size 
  
    Text 
    Text or combinations of text    and numbers, such as addresses. Also numbers that do not require    calculations, such as phone numbers, part numbers, or postal codes. 
    Up to 255 characters.    Microsoft Access only stores the characters entered in a field; it does not    store space characters for unused positions in a Text field. To control the    maximum number of characters that can be entered, set the FieldSize property. 
  
    Memo 
    Lengthy text and numbers,    such as notes or descriptions. 
    Up to 64,000 characters. 
  
    Number 
    Numeric data to be used for    mathematical calculations, except calculations involving money (use Currency    type). Set the FieldSize property to define the specific Number type. 
    1, 2, 4, or 8 bytes. 16 bytes    for Replication ID (GUID) only. 
  
    Date/Time 
    Dates and times. 
    8 bytes. 
  
    Currency 
    Currency values. Use the    Currency data type to prevent rounding off during calculations. Accurate to    15 digits to the left of the decimal point and 4 digits to the right. 
    8 bytes. 
  
    AutoNumber 
    Unique sequential    (incrementing by 1) or random numbers automatically inserted when a record is    added. 
    4 bytes. 16 bytes for    Replication ID (GUID) only. 
  
    Yes/No 
    Fields that will contain only    one of two values, such as Yes/No, True/False, On/Off. 
    1 bit. 
  
    OLE Object 
    Objects (such as Microsoft    Word documents, Microsoft Excel spreadsheets, pictures, sounds, or other    binary data), created in other programs using the OLE protocol, that can be    linked to or embedded in a Microsoft Access table. You must use a bound    object frame in a form or report to display the OLE object. 
    Up to 1 gigabyte (limited by    disk space). 
  
    Hyperlink 
    Field that will store    hyperlinks. A hyperlink can be a UNC path or a URL. 
    Up to 64,000 characters. 
  
    Lookup Wizard 
    Creates a field that allows    you to choose a value from another table or from a list of values using a    combo box. Choosing this option in the data type list starts a wizard to    define this for you. 
    The same size as the primary    key field that is also the Lookup field; typically 4 bytes. 
  
Reference:
Field Properties

MS ACCESS DATABASE DATA TYPES

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Data Type	Use For	Size
Text	Text or combinations of text and numbers, such as addresses. Also numbers that do not require calculations, such as phone numbers, part numbers, or postal codes.	Up to 255 characters. Microsoft Access only stores the characters entered in a field; it does not store space characters for unused positions in a Text field. To control the maximum number of characters that can be entered, set the FieldSize property.
Memo	Lengthy text and numbers, such as notes or descriptions.	Up to 64,000 characters.
Number	Numeric data to be used for mathematical calculations, except calculations involving money (use Currency type). Set the FieldSize property to define the specific Number type.	1, 2, 4, or 8 bytes. 16 bytes for Replication ID (GUID) only.
Date/Time	Dates and times.	8 bytes.
Currency	Currency values. Use the Currency data type to prevent rounding off during calculations. Accurate to 15 digits to the left of the decimal point and 4 digits to the right.	8 bytes.
AutoNumber	Unique sequential (incrementing by 1) or random numbers automatically inserted when a record is added.	4 bytes. 16 bytes for Replication ID (GUID) only.
Yes/No	Fields that will contain only one of two values, such as Yes/No, True/False, On/Off.	1 bit.
OLE Object	Objects (such as Microsoft Word documents, Microsoft Excel spreadsheets, pictures, sounds, or other binary data), created in other programs using the OLE protocol, that can be linked to or embedded in a Microsoft Access table. You must use a bound object frame in a form or report to display the OLE object.	Up to 1 gigabyte (limited by disk space).
Hyperlink	Field that will store hyperlinks. A hyperlink can be a UNC path or a URL.	Up to 64,000 characters.
Lookup Wizard	Creates a field that allows you to choose a value from another table or from a list of values using a combo box. Choosing this option in the data type list starts a wizard to define this for you.	The same size as the primary key field that is also the Lookup field; typically 4 bytes.