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Compute the closure (F+) for the following set of the functional dependencies defined on R(a,b,c,d), where F - {c→a, ab→d, a→b, d→c}, i.e. what are all of the FDs implied by F (Hint; there's 24 of them).
Example: //REVOKE ALL ON EMP FROM MCA12; (All permissions will be cancelled) You can also cancel only some of the permissions. Drop: A user-
The ER diagram clearly showing the additional tables you have implemented. SQL table creation scripts for the tables you have set up. SQL scripts showing the sample data you
what are the topics in data management
What is meant by Physical blocks? The input and output operations are completed in block units. The blocks residing on the disk are referred to as physical blocks.
Failure Controlling Methods: Failures can be handled using different recovery methods that are talk about later in the unit. But the first question is doing we really require recov
Write the syntax of creating an INDEX ? Syntax of Creating an Index: CREATE [BITMAP] [UNIQUE] INDEX ON ( [, ] . . .);
What is association? Give an example of association Association is used for establishing relationships among classes. Association describe links among/between classes. For exa
State the Object Design for Processing The object design phase comes after analysis and system design phase. The object design phase includes implementation details like as i
What are the two integrity rules? Ans: The two integrity rules are: Entity Integrity Rule & Referential Integrity Rule. Entity Integrity Rule - If the attribute A of rel
What is called query processing? Query processing refers to the range of activities included in extracting data from a database.
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