ARCHIVELINK_DEFINE_KEY
The function module ARCHIVELINK_DEFINE_KEY defines the index key structure.
Definition
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ARCHIVELINK_DEFINE_KEY |
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TABLES KEY_DEFINITION |
KEY_DEFINITION
defines the structure of the DAIN line.Functions
The structure of the DAIN line is described in the table
KEY_DEFINITION.The structure TOA_KEY has the following structure:
Key name that is used later for the interactive search.
Position of the key component within the DAIN line.
Length of the key component within the DAIN line.
There is an example application in the program OACONTA4.
Index Line DKEY
DKEY lines define keys or partial keys in the index lines (DAIN lines) and therefore the index structure.
The sequence of DKEY lines in the indexed data file or description file defines the order of the keys in the DAIN line.
DKEY lines are structured as follows:
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Line Structure |
Offset |
Length (bytes) |
Description |
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INDEX_NAME |
0-3 |
4 |
Name of record type (DKEY) |
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KEY_NAME |
4-43 |
40 |
Key name |
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POSITION |
44-46 |
3 |
Offset position The offset begins with 0 at the first position after DAIN |
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LENGTH |
47-49 |
3 |
Length of key name in bytes |
The keys are defined by KEY_NAME, POSITION, and LENGTH.