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Questions and Answers
Database applications were initially built on top of file systems, leading to data redundancy and inconsistency.
Database applications were initially built on top of file systems, leading to data redundancy and inconsistency.
True (A)
Database design requires finding a 'good' collection of relation schemas.
Database design requires finding a 'good' collection of relation schemas.
True (A)
Concurrent access by multiple users is not needed for performance.
Concurrent access by multiple users is not needed for performance.
False (B)
Security problems are easy to address in database applications.
Security problems are easy to address in database applications.
Integrity constraints are explicitly stated in program code.
Integrity constraints are explicitly stated in program code.
Database applications were initially built directly on top of file systems, leading to data redundancy and inconsistency.
Database applications were initially built directly on top of file systems, leading to data redundancy and inconsistency.
Atomicity of updates means that failures may leave the database in an inconsistent state with partial updates carried out.
Atomicity of updates means that failures may leave the database in an inconsistent state with partial updates carried out.
Concurrent access by multiple users is not needed for performance.
Concurrent access by multiple users is not needed for performance.
Security problems are hard to address in database applications.
Security problems are hard to address in database applications.
Integrity constraints are explicitly stated in program code.
Integrity constraints are explicitly stated in program code.
What are some challenges faced when database applications were built directly on top of file systems?
What are some challenges faced when database applications were built directly on top of file systems?
Why were integrity constraints 'buried' in program code when database applications were built on file systems?
Why were integrity constraints 'buried' in program code when database applications were built on file systems?
What are the key considerations in the logical design phase of database design?
What are the key considerations in the logical design phase of database design?
What are the implications of uncontrolled concurrent accesses in database applications?
What are the implications of uncontrolled concurrent accesses in database applications?
How did the initial approach of building database applications on file systems impact the atomicity of updates?
How did the initial approach of building database applications on file systems impact the atomicity of updates?
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