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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
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State the data flow diagram of functional model Any action initiated by transition in the state diagram can be extended into an entire data flow diagram in functional model. Th
need requirement analysis for database management of stock market
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Control as Concurrent Tasks The expression control as simultaneous task means applying control for those events of object which can happen simultaneously. An object can be imp
Code an Oracle Database trigger to enforce the constraint that an employee can never change his or her department.
what is correlation in nested query
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
Construct a clean ans concise ER diagram for the database indicating the cardinality mapping for Employee management syatem
What type of view of total database content? Data base content Conceptual view of total database contain.
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