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CMPT 339 A - Intr to Database Management Systems (FA 2026)
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Use the following relations R and S to answer the question:
Compute R ⋈R.A<S.C S. [this is theta join]. Which of the following records will be in the result?(Note: R.A means the attribute A of the relation R.)
Use the following relations R and S to answer the question:
Compute π B, C (R ⋈ S). Which of the following records will be in the result?
Use the following relations R and S to answer the question:
Compute R ⋈ S. Which of the following records will be in the result?
Which of the following are examples of documentation that describes the current system?
During the implementation stage, the Data Definition Language (DDL) is used to:
In the view integration approach, a local data model is:
Which fact-finding technique is described by the following?
This technique uses computer trade journals, reference books, and the Internet (including user groups and bulletin boards). This provides information on how others have solved similar problems, plus whether or not software packages exist to solve or even partially solve the problem.
Database administration is the management of the physical realization of a database system, including:
Which database design approach first identifies a set of major entities and then spreads out to consider other entities, relationships, and attributes associated with those first identified?
Observation of the organization in operation is particularly useful when: