Files and
Databases Processing
The files and databases handling capability features
flexibility and transparency:
- Instruction set
common to all types of files and databases processed;
the
program is usually independent of the dataset type and the format of
the data.
- Reading of any
number of files and databases sequentially or randomly.
- Creation or
modification of any number of files simultaneously or successively.
- Possibility of
sorting files.
- Use of files in
memory (ULTIM pseudo-files) for faster access.
- Automatic and
manual file opening and closing.
- Modification of
the file identification (dsname, etc.) by the user before opening.
- Numerous options
for controlling file access: opening, reading direction, links between
records, etc.
Here are the main processing
instructions
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OPEN |
To manually open a file or a database |
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CLOSE |
To manually close a file or a database |
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GET |
To read a record or a row |
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WRITE |
To write a record |
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DELETE |
To suppress a record |
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INSERT |
To add a new record |
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REWRITE |
To update a record |
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NEXT |
To loop back to the preceding GET |
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SORT |
To sort a file |
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For more specific information to a
particular database, please refer to DB
Interfaces
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