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شرح Oracle Identity Column

شرح Oracle Identity Column

28 Dezember 2020 (0)

مقدمة عن Oracle identity column في الاصدار 12C من قواعد بيانات إدخلت اوراكل طريقة جديدة لتعريف العمود كـ identity في الجداول وهي نفس AUTO_INCREMENT في MySQL أو IDENTITY في SQL Server. وتعتبر الـ identity column مفيدة جداً عندما يكون …

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