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INSY Exam 1 Questions with Complete Solutions 2024/2025
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INSY Exam 1 Questions with Complete Solutions 2024/2025
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INSY Exam 1 Questions with CompleteSolutions 2024/2025
Structural Dependence - ANSWERSaccess to a file is dependent on its structure
data dependence - ANSWERSdata access changes when data storage characteristics change
one-to-many - ANSWERStake primary key from one, throw to many side
many-to-many - ANSWERSMake new table with both primary keys
one-to-one - ANSWERSone foreign key
Ternary M-to-M General Rule - ANSWERSAt least 2 chicken feet
Ternary One-to-Many - ANSWERSMany gets both primary keys from one side
Ternary M-to-M - ANSWERSwill have foreign key if there is a one side
relvar - ANSWERSVariable that holds a relation
closure - ANSWERSuse of relational algebra on existing tables to produce new relations
"current" - ANSWERSmember/customer
select - ANSWERSlists rows
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