what are the data types used in MS-Acces?
Answers
Answer:
Access: Data Types
TEXT. Short Text (formerly Text) is a simple data type. ...
NUMBER. For Number, the critical distinction is made in the Field Size property: Byte, Integer, Long Integer, Single, Double, Replication ID, and Decimal. ...
DATE/TIME. Date/Time is stored as a number. ...
CURRENCY. ...
YES/NO. ...
OLE OBJECT. ...
HYPERLINK. ...
ATTACHMENT.
Explanation:
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Explanation:
Data Type
Usage
Size
Short Text (formerly known as “Text”)
Alphanumeric data (names, titles, etc.)
Up to 255 characters.
Long Text (formerly known as “Memo”
Large amounts of alphanumeric data: sentences and paragraphs. See The Memo data type is now called “Long Text” for more information on the Long Text details.
Up to about 1 gigabyte (GB), but controls to display a long text are limited to the first 64,000 characters.
Number
Numeric data.
1, 2, 4, 8, or 16 bytes.
Large Number
Numeric data.
8 bytes.
For more information, see Using the Large Number data type.
Date/Time
Dates and times.
8 bytes.
Date/Time Extended
Dates and times.
Encoded string of 42 bytes
For more information, see Using the Date/Time Extended data type.
Currency
Monetary data, stored with 4 decimal places of precision.
8 bytes.
AutoNumber
Unique value generated by Access for each new record.
4 bytes (16 bytes for ReplicationID).
Yes/No
Boolean (true/false) data; Access stores the numeric value zero (0) for false, and -1 for true.
1 byte.
OLE Object
Pictures, graphs, or other ActiveX objects from another Windows-based application.
Up to about 2 GB.
Hyperlink
A link address to a document or file on the Internet, on an intranet, on a local area network (LAN), or on your local computer
Up to 8,192 (each part of a Hyperlink data type can contain up to 2048 characters).
Attachment
You can attach files such as pictures, documents, spreadsheets, or charts; each Attachment field can contain an unlimited number of attachments per record, up to the storage limit of the size of a database file. Note, the Attachment data type isn't available in MDB file formats.
Up to about 2 GB.
Calculated
You can create an expression that uses data from one or more fields. You can designate different result data types from the expression. Note, the Calculated data type isn't available in MDB file formats.
Dependent on the data type of the Result Type property. Short Text data type result can have up to 243 characters. Long Text, Number, Yes/No, and Date/Time should match their respective data types.
Lookup Wizard
The Lookup Wizard entry in the Data Type column in Design view is not actually a data type. When you choose this entry, a wizard starts to help you define either a simple or complex lookup field. A simple lookup field uses the contents of another table or a value list to validate the contents of a single value per row. A complex lookup field allows you to store multiple values of the same data type in each row.
Dependent on the data type of the lookup field.