Composite primary key - Study guides, Class notes & Summaries

MISY 5300 Final Review Latest Update Graded A+ Steps in conceptual level design Defining the necessary attributes for each entity and outlining their relationships based on business rules. This often involves creating an entity- relationship (E-R) diagram to visually represent the database structure. User perspectives Specific data required by individuals or processes for particular tasks. One-to-Many Relationship Indicates that one record in one table can correspond to multiple ...

Chapter 3 Database Design Exam Questions And Correct Answers All 100% Verified Primary Key - Answer -Is a column, or a group of columns, used to identify a row. The primary key is usually the tables 1st column, and appears on the left of table diagrams, but the position is not significant to the database. * often, primary key values are used in the WHERE clause to select a specific row. * Primary keys must be: - Answer -- Unique: this rule ensures that each value identifies at most one...

©THESTAR EXAM SOLUTIONS 2024/2025 ALL RIGHTS RESERVED. 1 | P a g e WGU D426 Exam Questions And Answers Updated 2024/2025 A ____ is a column, or group of columns, used to identify a row. - answerPrimary key A ____ consists of a single column. - answerSimple primary key A ____ key consists of multiple columns. - answerComposite primary All primary keys columns are necessary for uniqueness. When any column is removed, the resulting simple or composite column is no longer unique. - answerM...

CLC 056 exam Analyzing Contract Costs Exam (contains 55 questions) • Here is your test result.The dots represent the choices you have made. • The highlighted questions are the questions you have missed. • Remediation Accessed shows whether you accessed those links.'N' represents links not visited and 'Y' represents visited links. The offeror customarily treats similar costs as “other direct costs” under similar circumstances The proposed cost benefits only the proposed contract work Th...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers (100% Correct) Graded A+. What does modality refer to? How does it appear on ER diagram? - ANSWERRefers 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...

WGU C170 Data Management - Applications|Latest Update Complete with A+ Graded Answers Domain In data modeling, the construct used to organize and describe an attribute's set of possible values. Primary key (PK) An identifier composed of one or more attributes that uniquely identifies a row. Also, a candidate key selected as a unique entity identifier. A minimal superkey. Key One or more attributes that determine other attributes. Determination The role of a key. In the c...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM ACTUAL EXAM 2 LATEST VERSIONS . 300 QUESTIONS WITH CORRECT AND DETAILED ANSWERS WITH RATIONALES. ALREADY GRADED A+. 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...

business rule Ans- A description of a policy, procedure, or principle within an organization. For example, a pilot cannot be on duty for more than 10 hours during a 24-hour period, or a professor may teach up to four classes during a semester. candidate key Ans- A minimal superkey; that is, a key that does not contain a subset of attributes that is itself a superkey. See key. composite entity Ans- An entity designed to transform an M:N relationship into two 1:M relationships. The co...

WGU D426 Exam With Latest Questions And Answers. Updated And Verified. A ____ is a column, or group of columns, used to identify a row. - AnswerPrimary key A ____ consists of a single column. - AnswerSimple primary key A ____ key consists of multiple columns. - AnswerComposite primary All primary keys columns are necessary for uniqueness. When any column is removed, the resulting simple or composite column is no longer unique. - AnswerMinimal The ____ constraint in the CREATE TABLE statem...

WGU C175/D426 DATA MANAGEMENT FOUNDATIONS OA EXAM Questions With Verified Answers 2024/2025 (Graded A+) What does modality refer to? How does it appear on ER diagram? - ANSWERRefers 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 val...