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Describe in brief about DBMS?
Part 1: Security Plan Consider the Case study and identify 3 security requirements. For each of these security requirements: • Discuss the necessity for the feature and how
design a generalization specialization hierarchy for a motor vehicle sales company. the company sells motorcycles, passenger cars, vens and buses.
Define a relation ? Relation - A relations is a named two-dimensional table of data. Mathematically, a relation can be described as a subset of the cartesian product of a lis
How to create values of structured type? Constructor functions are used to make values of structured types. A function with the similar name as a structured type is a construct
Give the levels of data abstraction? There are three levels of Data Abstraction a) Physical level b) logical level c) view level
What is System R? What are its two major subsystems? System R was intended and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its pur
Define multivalued dependency. What do understand by trivial multivalued dependency? Ans: A multivalued dependency is a full constraint among two sets of attributes in a rela
Show, with the help of an example, that relatively high-level transitions result when system or program is stimulated by the outside events. In diagram below, we can observe i
i want notes on this topic
List the string operations supported by SQL? 1) Pattern matching Operation 2) Concatenation 3) Extracting character strings 4) Converting among uppercase and lower cas
Database Management scheme is collection of interrelated data and set of programs to access those data. DBMS is a general purpose software system which facilitates the process of defining constructing and manipulating databases for a range of applications.
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