Question: A Database schema, along with primary key and foreign key dependencies, can be depicted pictorially by _________
Answer:
Do not get confuse a schema diagram m with an E-R Diagram, In particular, ER diagrams do not show foreign key attributes explicitly, Whereas Schema diagram show them explicitly.
MCQ: A Database schema, along with primary key and foreign key dependencies, can be depicted pictorially by _________
Explanation:
Do not get confuse a schema diagram m with an E-R Diagram, In particular, ER diagrams do not show foreign key attributes explicitly, Whereas Schema diagram show them explicitly.
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Related Questions
- 1. The relational Algebra is a ____________ Query language.
- 2. Which of the following are the fundamental operations in the Relational Algebra?
- 3. The select, project and rename operations are called____
- 4. Which of the following is the Binary Operations?
- 5. The select operation selects tuples that satisfy a given predicate. We use the lowercase______ to denote selection
- 6. Suppose we want to list all loan numbers and the amount of the loans, but do not care about the branch name. Which of the following operation allows us to produce this relation?
- 7. The Project operation selects tuples with some attributes that we wish to include but some attribute we do not want to include in the final relation. We use the lowercase______ to denote Project operation.
- 8. The Binary operation Union, denoted, as in the set theory by _____
- 9. If we want to include attributes from two different relations, which of the following operations is needed?
- 10. Which of the following operation allows us to find the tuples that are in one relation but are not in another relation?
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