Cascade delete - Study guides, Class notes & Summaries

WGU C175 / D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers (100% Correct) Graded A+. Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key value 4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is updated 2. Foreign key is updated 3. Row containing primary key is DELETED 4. Row containing foreign key is INSERTED 4 Actions to Correct Referential Integrity Violation: - A...

Schema The definition of how data in a database will be organized. - Create - Read - Update - Delete The basis of interacting with databases can be defined using the CRUD acronym. What does CRUD stand for? Brainpower 0:02 / 0:15 DATE: YYYY-MM-DD DATETIME: YYYY-MM-DD HH:MM:SS What is the DATE datatype syntax? What is the DATETIME datatype syntax? It will have 3 numbers before the decimal and 2 after. What does DECIMAL(3,2) indicate? Stored Procedures ...

D427 DATA MANAGEMENT – APPLICATIONS NEW WRITTEN SOLUTION 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 Which two examples are attributes? Choose 2 answers A person attending a meeting An employee number A sales meeting A meeting code Which delete rule sets column values in a child table to a m...

D427 DATA MANAGEMENT (APPLICATIONS) QUESTIONS AND ANSWERS 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? A One-to-one B One-to-many C One-to-one binary D Many-to-many Which kind of relationship is displayed in this entity-relationship diagram? A Many-to-many unary B Many-to-many binary C One-to-one unary D One-to-one binary Which kind of relationship is dis...

VERSION A What does modality refer to? How does it appear on ER diagram? - ANSWER- Refers to the MINIMUM number of times an instance in one entity can be associated with instance of another entity (minima) Appears as a 0 or 1 on the relationship line, next to cardinality Define: Referential Integrity - ANSWER- Requires that ALL foreign key values must either be fully NULL or match some primary key value 4 Ways Referential Integrity can be violated: - ANSWER- 1. Primary key is updated 2...

WGU Course C170 - Data Management (Applications) Quizlet by Brian MacFarlane 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? A One-to-one B One-to-many C One-to-one binary D Many-to-many D Which kind of relationship is displayed in this entity-relationship diagram? A Many-to-many unary B Many-to-many binary C One-to-one unary D One-to-one binary A Which kin...

WGU D427 Practice Test with Answer Key 2024. 1. Seattle, WA 98111 USA How many attributes are present in the address fragment? a. 1 b. 2 c. 3 d. 4 2. The Book table has the following columns: genre – varchar(20) pages – integer author_id – char(3) isbn_number – varchar(20) Which column should be designated at the primary key for the Book table? a. genre b. pages c. author_id d. isbn_number 3. The Book table has the following columns: genre – varchar(20) pages – in...

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 attending a meeting An employee number A sales meetingA meeting code An employee number A meeting code Which delete rule sets column values in a child table to a missing value when the matching data...

WGU D427 Practice Test with Answer Key 2024. 1. Seattle, WA 98111 USA How many attributes are present in the address fragment? a. 1 b. 2 c. 3 d. 4 2. The Book table has the following columns: genre – varchar(20) pages – integer author_id – char(3) isbn_number – varchar(20) Which column should be designated at the primary key for the Book table? a. genre b. pages c. author_id d. isbn_number 3. The Book table has the following columns: genre – varchar(20) pages – ...

WGU D427 Practice Test with Answer Key 2024. 1. Seattle, WA 98111 USA How many attributes are present in the address fragment? a. 1 b. 2 c. 3 d. 4 2. The Book table has the following columns: genre – varchar(20) pages – integer author_id – char(3) isbn_number – varchar(20) Which column should be designated at the primary key for the Book table? a. genre b. pages c. author_id d. isbn_number 3. The Book table has the following columns: genre – varchar(20) pages – in...