Fourth normal form 4nf - Study guides, Class notes & Summaries

Normalization Correct Answer: is the process of removing redundant data from non-key columns in a relation (table). Redundant data will only apply to Correct Answer: non-key attributes. Lossless Correct Answer: describes the requirement that all existing columns must eventually be placed into a table. The general three steps to normalize data: Correct Answer: 1. first normal form (1NF) 2. second normal form (2NF) 3. third normal form (3NF) ----------------------------------- 4. ...

WGU C175 - Data Management - Foundations - Lesson 5, Questions section coverage, graded A+ atomic attribute - -An attribute that cannot be further subdivided to produce meaningful components. For example, a person's last name attribute cannot be meaningfully subdivided. atomicity - -The transaction property that requires all parts of a transaction to be treated as a single, indivisible, logical unit of work. All parts of a transaction must be completed or the entire transaction is abort...

WGU C175 - Data Management - Foundations - Lesson 5, Questions and answers, 100% Accurate, rated A+ atomic attribute - -An attribute that cannot be further subdivided to produce meaningful components. For example, a person's last name attribute cannot be meaningfully subdivided. atomicity - -The transaction property that requires all parts of a transaction to be treated as a single, indivisible, logical unit of work. All parts of a transaction must be completed or the entire transaction...

access plan A set of instructions generated at application compilation time that is created and managed by a DBMS. The access plan predetermines how an application's query will access the database at run time. algorithms A process or set of operations in a calculation. alias An alternative name for a column or table in a SQL statement. ALTER TABLE The SQL command used to make changes to table structure. When the command is followed by a keyword (ADD or MODIFY), it adds ...