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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 to track the prices of its various packages. Package pricing differs by season (high and low). The input record should include package code, package description, vendor number, low season cost, low season dates (beginning and ending), high season cost, high season dates (beginning and ending), package markup percentage. Design the input record.
Field
No.
Item
Description
Field Name
Length
Data
Type
# of
Decimal
Places
Comments
#floating point representation is used to store
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
Define in which normalisation form if an attribute of a composite key is dependent on an attribute of other composite key. Ans: 3NF A relation is in 3 NF if an attribute of
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An instance of relational schema R (A, B, C) has distinct values of A including NULL values. then A is a candidate key or not? If relational schema R (A, B, C) has distinct val
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Question 1 Explain ER model Question 2 What are the characteristics of a computer provided information? Question 3 What are facts and guidelines to be considered when se
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Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
What is a state chart diagram? State diagrams (State Chart Diagram) explain all possible states that a particular object can get into, and how object's state changes as result
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