WGU C170 Chp 1, With Complete Verified Solution 2024.

WGU C170 Chp 1, With Complete Verified Solution 2024. AREA in DB2, a named section of permanent storage space that is reserved to store the database. associative entity another name for composite entity, bridge entity or linking table bridge entity another name for composite entity, associative entity or linking table candidate key a minimal superkey; that is, a key that dows not contain a subset of attributes that is itself a superkey. closure A property of relational operators that permits the use of relational algebra operators on existing tables (relations) to produce new relations. composite entity An entity designed to transform an M:N relationship into two 1:M relationships. The composite entity's primary key comprises at least the primary keys of the entities that it connects. Also known as a bridge entity or associative entity. composite key A multiple-attribute key. dependent an attribute whose value is determined by another attribute. determination The role of a key. In the context of a database table, the statement "A determines B" indicates that knowing the value of attribute A means that the value of attribute B an be looked up DIFFERENCE In relation algebra, an operator used to yield all rows from one table that are not found in another union-compatible table. DIVIDE In relational algebra, an operator that answers queries about one set of data being associated with all values of data in another set of data domain In data modeling, the construct used to organize and describe an attribute's set of possible values. entity integrity The property of a relational table that guarantees each entity has a unique value in a primary key and that the keys has no null values. equijoin A join operator that links tables based on an equality condition that compares specified columns of the tables flags