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Relational Database Keys and REA Modeling Business Processes Quiz

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Relational Database Keys and REA Modeling Business Processes Quiz

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Questions and Answers

What type of keys are used to link tables in a relational database?

Indexed keys

Primary keys

Foreign keys (correct)

Concatenated keys

In REA Modeling, what are the three separate business processes?

Attributes, Relationships, Tables

Primary Keys, Foreign Keys, Concatenated Keys

Entities, Connections, Transactions

Resources, Events, Agents (correct)

What is the responsibility of a Database Administrator?

Modeling the business processes

Creating foreign keys for data integrity

Maintaining the database (correct)

Linking tables using concatenated keys

What is the first step in creating an Entity-Relationship Diagram (ERD)?

Identify events Signup and view all the answers

Which requirement must be true when designing an REA diagram?

Every attribute must be single-valued Signup and view all the answers

What does a Data Dictionary provide in a database system?

Detailed descriptions of data types for fields Signup and view all the answers

What is the role of Data Integrity in a database?

Ensures data is accurate, complete, and valid Signup and view all the answers

Which cardinality relationship is denoted by a crow foot to crow foot symbol?

(M:N) many to many Signup and view all the answers

What is the purpose of Data Manipulation Language (DML) in a database?

Creates, updates, inserts, and deletes data Signup and view all the answers

What is the function of Data Control Language (DCL) in a database management system?

Grants and removes user access rights Signup and view all the answers

Which language is used to retrieve, sort, order, and display data from a database?

Data Query Language (DQL) Signup and view all the answers

In a Relational Data Model, how is data primarily stored?

In tables Signup and view all the answers