July 2002
Beginner
424 pages
9h 30m
English
Content preview from SQL: Visual QuickStart Guide
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Bit String Types
Use bit string data types to represent binary numbers. A bit string has these characteristics:
It’s an ordered sequence of zero or more bits.
Each bit has the value 0 or 1.
It typically is used to store binary data such as application files or digitized sounds and images. Long bit strings often are called binary large objects or BLOBs.
In SQL statements, a bit string is surrounded by single quotes.
It’s one of the types listed in Table 3.6.
✓ Tips
DBMSes don’t attempt to interpret bit strings; their meaning is up to the application.
For experienced programmers: In addition to using binary (base 2) form, you can represent bit strings in hexadecimal, or hex, (base 16) form. The hexadecimal system uses the digits 0 through 9 and the ...
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