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explain cascading rollback
Design an algorithm to implement operations Each and every operation specified in the functional model could be formulated as an algorithm. The algorithm indicates how operat
Consider the relations described below: PHYSICIAN (regno, name, telno, city) PATIENT (pname, street, city) VISIT (pname, regno, date_of_visit, fee) Where the regno and pname ide
Transactions And Concurrency Management Introduction One of the main benefits of storing data in an integrated repository or a database is to permit sharing of it betwee
Which is an advantage of view? The Advantages of view is Data security, Derived columns and Hiding of complex queries
How to draw an ER diagram to a finance companz
Describe queries with complex types? The present extension of the SQL query language deal with the complex type Let us start with the simple example: Find the title and t
WHY SHOULD NULL IN A RELATION BE AVOID AS possible?
Draw the precedence graph of the following schedule and determine whether the schedule is serializable. (Note that all instructions, except lock and unlock, are omitted. We assume
Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
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