WGU C170

AREA - In DB2, a named section of permanent storage space that is reserved to store the database. associative entity - See composite entity. bridge entity - See composite entity. candidate key - A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a sup...

Syntax for updating a specific column in a specific row - UPDATE <table> SET <atrribute> = <value> WHERE <primary key> = <value>; Syntax for deleting a row - DELETE FROM <TableName> WHERE <PrimaryKey> = <#>; Syntax for creating a view - CREATE VIE...

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. Alias -An alternative name for a column or table in a SQL statement. ALTER TABLE -Th...

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. Alias -An alternative name for a column or table in a SQL statement. ALTER TABLE -Th...

A salesperson is authorized to sell many products and a product can be sold by many salespersons. Which kind of binary relationship does this scenario describe? One-to-one One-to-many Many-to-many One-to-one binary - Many-to-many Which two examples are attributes? Choose 2 answers A person a...

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows return...

DML - IUDS, CR insert, update, delete, select commit, rollback INSERT - add new rows UPDATE - modify data of existing rows DELETE - delete some/all records from database can be rolled back COMMIT - permanently saves ROLLBACK - undo changes SELECT - data retrieval WHERE - limits rows return...

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf...

An entity is said to be X -dependent if it can exist in the database only when it is associated with another related entity occurrence. - existence A table that has all key attributes defined has no repeating groups and all its attributes are dependent on the primary key is said to be in X. - 1nf...

First Normal Form - - when all non-key columns depend on the primary key - a table with a primary key is in first normal form - a table with no duplicate rows is in first normal form Second Normal Form - - when all non-key columns depend on the whole primary key - cannot depend on part of a comp...

1.1.1 - Conceptual Schema - ER Model Tables: Customer, DonutOrder, Donut - Customer: PK - CustomerID Rest are customer related fields DonutOrder: FK - CustomerID, FK - DonutID Qty, SpecialNotes Donut: PK - DonutID Rest are donut fields Relationships: Customer - 1:n Identifying - DonutOrd...

First Normal Form -- when all non-key columns depend on the primary key - a table with a primary key is in first normal form - a table with no duplicate rows is in first normal form Second Normal Form -- when all non-key columns depend on the whole primary key - cannot depend on part of a compos...

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. automatic query optim...

An inequality condition is also known as a natural join and an equality condition is also called a theta join. - False When using a(n) _____ join, only rows that meet the given criteria are returned. - inner The statement SELECT * FROM T1, T2 produces a(n) _____ join. - cross A(n) _____ join wil...