PrimeBase XT (PBXT) is a transactional storage
engine for MySQL. It uses a unique "write-once"
update strategy and MVCC (multi-version
concurrency control) to provide optimal
performance over a wide range of tasks.
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This release makes changes to enable PBXT to handle databases containing thousands of tables. It also fixes a number of concurrency problems with operations like TRUNCATE TABLE, ALTER and REPAIR table when used in conjunction with other DML.
A bug that caused PBXT to corrupt the index file when the size exceeded 4 GB has been fixed. This release runs under Windows. This source tree must be placed in the MySQL source storage directory in order to compile. Further details of how to build are in the windows-readme.txt file. This release checks for repeat updates of a record in a statement. It avoids checking for duplicates if an index is not modified by an update. Records updated repeatedly by a transaction are now updated in place.
The major feature of this new version is foreign
key support. The implementation is similar to that
of InnoDB and includes the RESTRICT, CASCADE, and
SET NULL options.
