Data Management Foundation C175 WGU Questions And Answers All Verified

Data Management Foundation C175 WGU Questions And Answers All Verified Associative Entity - ANS An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute - ANS An attribute is a property or characteristic of an entity. Binary relationship - ANS A binary relationship is a relationship between two entity types. Candidate Key - ANS Is any column or a combination of columns that can qualify as a unique key in the database. Cardinality - ANS Cardinality represents the maximum number of entities that can be involved in a particular relationship. Cartesian product - ANS 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 - ANS Will delete all records that reference the primary key column subquery - ANS Returns a single column of one or more values. data encryption - ANS 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 - ANS Is a methodology for organizing attributes into tables so that redundancy among the non-key attributes is eliminated. Data volatility - ANS Describes how often stored data is updated. Data Volume Assessment - ANS Understanding of how much data will be in a database or a table within a database Database - ANS A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. DCL - ANS Data control language is used to control access to data stored in a database. DDL - ANS 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. Definer - ANS Definer is a MySQL term where AuthID is the same for another DBMS Denormalization - ANS The act of duplicating data in a database for performance or the preservation of historical information disaster recovery - ANS Involves rebuilding an entire information system or significant parts of one after a catastrophic natural disaster such as a hurricane, tornado, earthquake, building collapse, or even a major fire.