What are the data types of access database?
The data type of the Access database determines the format and size of the data, including: text: alphanumeric string numeric: integer, decimal, or currency date/time: date and time floating point: high-precision numeric value boolean: True or False Remarks: Long text hyperlink: Website or file link Attachment: Binary file data OLE Object: Other application object Multi-value: Multiple values in a single field
Data type of Access database
The data type of Access database determines the format and size of the data stored in the database. Choosing the right data type is critical to ensuring data integrity and performance.
Common data types:
- Text: Used to store alphanumeric strings with variable length.
- Number: Used to store numeric values, which can be integers, decimals, or currencies.
- Date/Time: Used to store date and time.
- Floating point numbers: Used to store high-precision numeric values.
- Boolean: Used to store true or false values.
- Remarks: is used to store long text with variable length.
- Hyperlink: Used to store links to websites or files.
- Attachment: Used to store the binary data contained in the file.
- OLE Object: Used to store objects created by other applications, such as pictures or charts.
- Multiple values: Used to store multiple values in a field.
Factors to consider when choosing a data type:
- Data type: What type of data will be stored? (e.g. text, numbers).
- Data size: How much storage space the data will occupy.
- Data Integrity: How data types will restrict data entry and prevent invalid values.
- Performance: How data types will affect the speed of queries and reports.
Note:
- Access also includes other less commonly used data types, such as composite, large integer, and error.
- You can select data types in table design view or datasheet view.
- If you are not sure which data type to use, choose the most general type (such as text or number).
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