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Explain the Query Processing
Data Query Processing permits a user to report or analyze structured and unstructured data pulled from multiple data sources.
What is Relational calculus? Relational calculus is a Non- Procedural language.
why are older data models are being replaced by new data models
Describe in brief about DBMS ?
Define the phases of two phase locking protocol Growing phase: a transaction may get locks but not release any lock. Shrinking phase: a transaction might be release locks bu
Explain the Weak Entity Set An Entity set which does not have sufficient attribute to make a primay key is known as weak entity set. For instance, dependents of an employee in
The primary key is selected from the
Have database built but having problems with some questions that go with the database
Give the limitations of SQL authorization. The code for checking authorization becomes intermixed with the rest of the application code. Implementing authorization by applic
Benefits of heap files 1. This is a easy file Organisation method. 2. Insertion is somehow capable. 3. Good for bulk-loading data into a table. 4. Best if file
Greater potential for bugs: Since the sites of a distributed system operate simultaneously, it is more complex to ensure the correctness of algorithms. The art of constructing dis
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