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RoadmapThe following is a list of features and improvements that we are currently working on for DBISAM, their scheduled implementation version (if available), and their completion status.
 Scheduled |  Completed |
| Client Access | ||
| Need to add Kylix support. | 4.00 | 4.00 |
| Need to reduce the amount of blank data that is sent to clients when remote read ahead is very large and the BOF or EOF is hit in a table or query result set. | 4.00 | 4.00 |
| Need to be able to retry a query via the OnQueryError event handler. | 4.00 | 4.00 |
| Core | ||
| Add support for for different blocks sizes for different BLOB fields in the same table. | ||
| Add support for encrypting backups. | ||
| Add an engine event for handling custom collation (specifically for Linux). | ||
| Add support for optimizing filter and query expressions that involve an AND operator and can be optimized by an available concatenated index. | ||
| Ability to add non-DBISAM files to a backup in addition to the DBISAM tables. | ||
| Ability to abort backups via the OnBackupProgress event. | ||
| Add blob filtering via an event handler in the engine component. | ||
| Allow the VerifyTable to operate on tables while they are being used. | ||
| Allow for sorting in both directions using the same index. | ||
| Need to add the ability to specify which tables should be involved in a given transaction to reduce lock contention on a given database. | 4.00 | 4.00 |
| Need to add support for triggers. | 4.00 | 4.00 |
| Need to add support for limiting the concurrent number of logins per user in the database server. | 4.00 | 4.00 |
| Need to add timings to expression filter evaluations so that it can be determined how long a filter took to execute. Also need to add a separate panel in the Database System Utility for timings of SQ | 4.00 | 4.00 |
| Need to add query plan functionality, or at the very least an indicator of the query optimization level. | 4.00 | 4.00 |
| Need to add the ability to limit the maximum number of licensed connections in the database server by code and not as part of the server configuration. | 4.00 | 4.00 |
| SQL | ||
| Add bitwise operators to available SQL and filter operators. | ||
| Make UNION queries show progress for the entire query, not just the individual select queries within the entire statement. | ||
| Need to allow for expressions that contain aggregate functions in SQL SELECT statements. | 4.00 | 4.00 |
| Need to allow for the use of expressions other than constants in BETWEEN, LIKE, IN operators as well as POS, REPLACE, and OCCURS functions. | 4.00 | 4.00 |
| Need to allow for compatible-type constants (such as BCD and float constants) in IF function expressions without requiring a CAST function call. | 4.00 | 4.00 |
| Need to add support for the CASE operator in SQL. | 4.00 | 4.00 |
| Need to add support for the use of integers (0=False, 1=True) as type-compatible with booleans. | 4.00 | 4.00 |
| Need to add support for EXCEPT and INTERSECT operations in SQL. | 4.00 | 4.00 |
| Need to add line numbers and column numbers to SQL and filter parse error messages. | 4.00 | 4.00 |
| Server | ||
| Need to make the DBISAM server available as a component and add the ability to define server-side processes. | 4.00 | 4.00 |
| Utilities | ||
| Add a no backup checkbox (default unchecked) for the DBSYS utility when altering the structure of a table. | ||
| Need to add an option for previewing the generated SQL code from the Database System Utility reverse-engineering option. | 4.00 | 4.00 |
| Need to make it so the utilities can be compiled using any version of Delphi, not just Delphi 5. | 4.00 | 4.00 |
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