The replace statement maintains referential integrity between items that contain bidirectional bridges used by the Update Processor by eliminating duplicate item-IDs.
Syntax
|
replace file.var,item-ID.old with item-ID.new |
Parameter(s)
|
file.var |
File that contains the duplicate item-IDs |
|
item-ID.old |
Item to be replaced with item-ID.new. |
|
item-ID.new |
Item to replace item-ID.old. |
Description
item-ID.new replaces item-ID.old in bridged-to items. item-ID.old is deleted after replacement. In order for the database to be consistent, there should be two-way bridges between the references.
Example(s)
Assume that two files exist with the data shown below. Both files contain a bridge to attribute 1 of the other file.
|
File1 |
File2 |
||
|
ID |
Attr1 |
ID |
Attr1 |
|
b |
1 |
1 |
b |
|
c |
2 |
2 |
c |
|
d |
3 |
3 |
d |
Now assume that this FlashBASIC or BASIC program is run:
|
open "file1" to f1 replace f1,"b" with "c" |
Now, the files contain:
|
File1 |
File2 |
||
|
ID |
Attr1 |
ID |
Attr1 |
|
c |
1]2 |
1 |
c |
|
d |
3 |
2 |
c |
|
|
|
3 |
d |
See Also