The DB->get() method retrieves records from the database. In general,
DB->get() takes a key and returns the associated data from the
database.
There are a few flags that you can set to customize retrieval:
-
DB_GET_BOTH
- Search for a matching key and data item, that is, only return success
if both the key and the data items match those stored in the database.
-
DB_RMW
- Read-modify-write: acquire write locks instead of read locks during
retrieval. This can enhance performance in threaded applications by
reducing the chance of deadlock.
-
DB_SET_RECNO
- If the underlying database is a Btree, and was configured so that it
is possible to search it by logical record number, retrieve a specific
record.
If the database has been configured to support duplicate records,
DB->get() will always return the first data item in the duplicate
set.