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Explain data abstraction?
Data abstraction Data abstraction is a methodology in which enables us to isolate how a compound data object is utilized from the details of how it is constructed from more primitive data objects.
Analyzing Association Traversal Association Traversal shall be understood properly for the association design explanation. Analyzing association traversal means analyzing tra
1. Define each of the following IN YOUR OWN WORDS: (a) File: (b) Record: (c) Field: (d) Primary Key: (e) Secondary Key: 2. A travel agency wants t
What do you understand by RAID? Explain RAID Level 4 and Level5? RAID - It is stands for Redundant Array of Inexpensive Disks (as named by the inventor), or alternatively Re
is Chipo carrying his baby
List the table modification commands in SQL? A) Deletion B) Updates C) Insertion D) Update of a view
how many types of data model in DBMS? explain data abstraction with its different level
What exactly is the concept of Functional Dependencies? And how do we associate this concept with the logic of Super-keys, Candidate Keys, etc? Given Relation R(A,B,C,D,E) with de
Write short notes on relational model The relational model uses a collection of tables to show both data and the relationships between those data. The relational model is an ex
a method named WonGame that checks each letter in the word is matched by its label
Define a property that is not a property of transactions? Ans: Concurrency is not a property of transactions
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