Data Management Foundation C175 WGU Associative Entity

Data Management Foundation C175 WGU Associative Entity - ANSWER-An associative entity is an element of the entity-relationship model. All relationships for the associative entity should be many. Attribute - ANSWER-An attribute is a property or characteristic of an entity. Binary relationship - ANSWER-A binary relationship is a relationship between two entity types. Candidate Key - ANSWER-Is any column or a combination of columns that can qualify as unique key in database. Cardinality - ANSWER-Cardinality represents the maximum number of entities that can be involved in a particular relationship. Cartesian product - 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 - ANSWER-Will delete all records that reference the primary key column subquery - ANSWER-Returns a single column of one or more values. data encryption - 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 - ANSWER-Is a methodology for organizing attributes into tables so that redundancy among the non-key attributes is eliminated. Data volatility - ANSWER-Describes how often stored data is updated. Data Volume Assessment - ANSWER-Understanding of how much data will be in a database or a table within a database Database - ANSWER-A database is a collection of information that is organized so that it can easily be accessed, managed, and updated. DCL - ANSWER-Data control language is used to control access to data stored in a database. DDL - 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. Definer - ANSWER-Definer is a MySQL term where AuthID is the same for another DBMS Denormalization - ANSWER-The act of duplicating data in a database for performance or the preservation of historical information disaster recovery - ANSWER-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. DML - ANSWER-Data manipulation language refers to the four basic operations that can and must be performed on data stored in any DBMS: data retrieval, data update, insertion of new records, and deletion of existing records. E-R model - ANSWER-An E-R model is a data model for describing a database in an abstract way. embedded mode - ANSWER-The SELECT command is embedded within the lines of a higher-level language program and functions as an input or "read" statement for the program.