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A basic model of Database Access Control Models of database access control have grown out of previous work on protection in operating systems. Let us talk about one simple mode
What are the three classes of SQL expression? SQL expression consists of three clauses: Select From Where
Describe the various types of Online Analytical Processing (OLAP) tools and briefly discuss how the support common analytical operations.
differences between a classified catalog and a dictionary catalog
Describe substring comparison in SQL. For the relation Person (name, address), write a SQL query that retrieves the names of people whose name starts along with ‘A' and address co
Benefits and Limitations od Data Models?
Explain data independence ? Data independence is the capacity to modify the schema at one stage of a database system without having to change the schema at the further level.
List the Armstrong's axioms for functional dependencies. What do you understand by soundness and completeness of these axioms? Ans: The Armstrong's axioms are: F1:
usecase diagram,activity diagraM,SEQUENCE DIAGRAM
Explain concept of inheritance with support of suitable example. Inheritance Inheritance is one of milestone of object-oriented programming language as it allows a creati
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