ARCHIVELINK_DEFINE_KEY 
The function module ARCHIVELINK_DEFINE_KEY defines the index key structure.
ARCHIVELINK_DEFINE_KEY |
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TABLES KEY_DEFINITION |
KEY_DEFINITION defines the structure of the DAIN line.
Features
The structure of the DAIN line is described in the table KEY_DEFINITION.
The reference structure TOA_KEY has the following structure:
KEY_NAME
Key name that is used later for the interactive search.
POSITION
Position of the key component within the DAIN line.
LENGTH
Length of the key component within the DAIN line.
ExampleThere is an example application in the program OACONTA4.
End of the example.
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:
Line Structure |
Offset |
Length (bytes) |
Description |
INDEX_NAME |
0-3 |
4 |
Name of record type (DKEY) |
KEY_NAME |
4-43 |
40 |
Key name |
POSITION |
44-46 |
3 |
Offset position The offset begins with 0 at the first position after DAIN. |
LENGTH |
47-49 |
3 |
Length of key name in bytes. |
The keys are defined by KEY_NAME, POSITION, and LENGTH.