Access specifications

Microsoft Access database specifications

ShowAccess database

Attribute Maximum
Microsoft Access database (.mdb) (Microsoft Access database: A collection of data and objects (such as tables, queries, or forms) that is related to a particular topic or purpose.) file size 2 gigabytes minus the space needed for system objects (system object: Database objects that are defined by the system, such as the table MSysIndexes, or by the user. You can create a system object by naming the object with USys as the first four characters in the object name.).
Number of objects in a database 32,768
Modules (including forms and reports with the HasModule property set to True) 1,000
Number of characters in an object name 64
Number of characters in a password 14
Number of characters in a user name or group name 20
Number of concurrent users 255

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ShowTable

Attribute Maximum
Number of characters in a table name 64
Number of characters in a field name 64
Number of fields in a table 255
Number of open tables 2048; the actual number may be less because of tables opened internally by Microsoft Access
Table size 2 gigabyte minus the space needed for the system objects
Number of characters in a Text field 255
Number of characters in a Memo field 65,535 when entering data through the user interface;
1 gigabyte of character storage when entering data programmatically
Size of an OLE Object field 1 gigabyte
Number of indexes in a table 32
Number of fields in an index 10
Number of characters in a validation message 255
Number of characters in a validation rule 2,048
Number of characters in a table or field description 255
Number of characters in a record (excluding Memo and OLE Object fields) when the UnicodeCompression property of the fields is set to Yes 4,000
Number of characters in a field property setting 255

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ShowQuery

Attribute Maximum
Number of enforced relationships 32 per table minus the number of indexes that are on the table for fields or combinations of fields that are not involved in relationships
Number of tables in a query 32
Number of fields in a recordset 255
Recordset size 1 gigabyte
Sort limit 255 characters in one or more fields
Number of levels of nested queries 50
Number of characters in a cell in the query design grid 1,024
Number of characters for a parameter in a parameter query 255
Number of ANDs in a WHERE or HAVING clause 99
Number of characters in an SQL statement approximately 64,000

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ShowForm and report

Attribute Maximum
Number of characters in a label 2,048
Number of characters in a text box 65,535
Form or report width 22 in. (55.87 cm)
Section height 22 in. (55.87 cm)
Height of all sections plus section headers (in Design view (Design view: A view that shows the design of these database objects: tables, queries, forms, reports, and macros. In Design view, you can create new database objects and modify the design of existing objects.)) 200 in. (508 cm)
Number of levels of nested forms or reports 7
Number of fields or expressions you can sort or group on in a report 10
Number of headers and footers in a report 1 report header/footer; 1 page header/footer; 10 group headers/footers
Number of printed pages in a report 65,536
Number of controls and sections you can add over the lifetime of the form or report 754
Number of characters in an SQL statement that serves as the Recordsource or Rowsource property of a form, report, or control (both .mdb and .adp) 32,750

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ShowMacro

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Microsoft Access project specifications

ShowAccess project

Attribute Maximum
Number of objects in a Microsoft Access project (.adp) (Microsoft Access project: An Access file that connects to a Microsoft SQL Server database and is used to create client/server applications. A project file doesn't contain any data or data-definition-based objects, such as tables and views.) 32,768
Modules (including forms and reports with the HasModule property set to True) 1,000
Number of characters in an object name 64
Number of columns in a table

250 (Microsoft SQL Server 6.5)

1024 (Microsoft SQL Server 7.0 and 2000)

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ShowMicrosoft SQL Server database

Microsoft SQL Server maximum capacity specifications are described in the SQL Server documentation. For more information about SQL Server Books Online, see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/startsql/getstart_4fht.asp, on the MSDN Web site.

ShowForm and report

Attribute Maximum
Number of characters in a label 2,048
Number of characters in a text box 65,535
Form or report width 22 in. (55.87 cm)
Section height 22 in. (55.87 cm)
Height of all sections plus section headers (in Design view (Design view: A view that shows the design of these database objects: tables, queries, forms, reports, and macros. In Design view, you can create new database objects and modify the design of existing objects.)) 200 in. (508 cm)
Number of levels of nested forms or reports 7
Number of fields or expressions you can sort or group on in a report 10
Number of headers and footers in a report 1 report header/footer; 1 page header/footer; 10 group headers/footers
Number of printed pages in a report 65,536
Number of controls and sections you can add over the lifetime of the form or report 754
Number of characters in an SQL statement that serves as the Recordsource or Rowsource property of a form, report, or control (both .mdb and .adp) 32,750

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ShowMacro

 
 
Applies to:
Access 2003