DATA MANAGEMENT FOUNDATION C175 WGU QUESTIONS WITH CORRECT ANSWERS

Associative Entity Correct Answer An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute Correct Answer An attribute is a property or characteristic of an entity. Binary relationship Correct Answer A binary relationship is a relationship between two entity types. Candidate Key Correct Answer Is any column or a combination of columns that can qualify as unique key in database. Cardinality Correct Answer Cardinality represents the maximum number of entities that can be involved in a particular relationship. Cartesian product Correct Answer Usually the result of a missing join condition or a method of expanding the data of 1 table by the number of rows in the second table. Cascade Delete Correct Answer Will delete all records that reference the primary key column subquery Correct Answer Returns a single column of one or more values. data encryption Correct Answer When data is encrypted, it is changed, bit by bit or character by character, into a form that looks totally garbled. It can and must be reconverted, or decrypted, back to its original form to be of use. Data normalization Correct Answer Is a methodology for organizing attributes into tables so that redundancy among the non-key attributes is eliminated. Data volatility Correct Answer Describes how often stored data is updated. Data Volume Assessment Correct Answer Understanding of how much data will be in a database or a table within a database Database Correct Answer A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. DCL Correct Answer Data control language is used to control access to data stored in a database. DDL Correct Answer Data definition language - involves instructing the DBMS software on what tables will be in the database, what attributes will be in the tables, which attributes will be indexed, and so forth.