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What is deadlock? How can it be avoided? How can it be resolved once it occurs? Deadlock happens when two transactions are each waiting on a resource that the other transaction
Desirable Properties Of Decomposition Decomposition is a process of dividing a relation into its projections that will not be disjoint. Please remind the Relational projection
Lock Based Protocol A lock is nothing but a mechanism that tells the DBMS whether a particular data item is being used by any transaction for read/write purpose. As there are t
What is OCR? OCR (Optical Character Recognition) is a technology that enables you to change different types of machine-readable documents, like scanned paper documents, PDF fil
What does the extract statement do in extract datasets? The data is written to virtual memory by extract commands.
what is cascading rollback
What was the method in which records are physically stored in a specified order according to a key field in each record ? A method in which records are physically stored within
What are the several forms of identity? a) Value b) Name c) Built-in
Give an example of multiple inheritance. One example of multiple inheritance is a committee for students affair which include faculty and administrative staff member.
Write a query that display ename annual salary and comm from emp table
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