| 摘要 |
Methods, systems and program storage devices for managing schema changes made by a user to an object in a database. The method including: (a) intercepting a database command entered by said user; (b) if said database command is a schema change command referencing said object in said database and a registry criterion is met, then inserting said database command or a command derived therefrom into a registered storage, otherwise releasing said database command to said database for execution thereby; (c) releasing said database command or a command derived therefrom from said registered storage to said database for execution thereby when a release criterion is met thus giving rise to a released command; and (d) inserting said released command or a command derived therefrom into a history storage.
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