Primary key pk - Study guides, Class notes & Summaries

WGU C170 Exam (New 2024/ 2025 Update) Data Management Applications Exam| 100% Correct| Graded A QUESTION What type of integrity is enforced when a primary key is declared? Answer: Creating a primary key constraint enforces entity integrity (i.e. no part of the primary key can contain a null and the primary key values must be unique). QUESTION What is a recursive relationship? Given an example. Answer: A recursive relationship exists when an entity is related to itse...

WGU C170 Study Guide (Latest 2024/ 2025 Update) Data Management Applications Exam| 100% Correct| Grade A Q: domain: In data modeling, the construct used to organize and describe an attribute's set of possible values. Q: entity integrity Answer: The property of a relational table that guarantees each entity has a unique value in a primary key and that the key has no null values. Q: equijoin Answer: A join operator that links tables based on an equality condition tha...

MIS 3320 BAYLOR Final review Actual Exam 2024/2025 class diagrams used to model classes & their associations with other classes -UML diagram -object oriented (OO) diagram (used for OOAD, OOP/OOPL, OODB) domain model class diagram -in analysis phase -model objects in the problem domain (things that need to be remembered) -PK identified as {key} -similar to ERD -domain models go to DBA and programmer design class diagram -in design phase -model software classes (data types: st...

In which situation is an IND not required? A) You intend to conduct a clinical trial with an investigational new drug B) You intend to conduct a clinical trial with an approved drug to support a marketing application for a new indication C) You intend to collect blood samples from subjects to look for biomarkers or pharmacogenetic information D) You intend to conduct a clinical trial using 2 of your approved drugs in a new combination - Answer-C) You intend to collect blood samples from s...

WGU C170 Study Guide (New 2024/ 2025Update) Data Management Applications Exam| 100% Correct| Grade A QUESTION predicate logic: Used extensively in mathematics to provide a framework in which an assertion (statement of fact) can be verified as either true or false. QUESTION primary key (PK) Answer: In the relational model, an identifier composed of one or more attributes that uniquely identifies a row. Also, a candidate key selected as a unique entity identifier. See ...

Nora's Bagel Bin Database Blueprints Data Management - Applications - VHT2 A. Nora’s Bagel Bin Database Blueprints First Normal Form (1NF) BAGEL ORDER PK Bagel Order ID PK Bagel ID Order Date First Name Last Name Address 1 Address 2 City State Zip Mobile Phone Delivery Fee Bagel Name Bagel Description Bagel Price Bagel Quantity Special Notes The table is in the First Normal form, as it satisfies the following requirements: • Have a unique ide...

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 Pre-Assessment Data Management – Foundations Exam (Latest 2023/ 2024) Questions and Verified Answers- Grade A Q: Which data classification is an entity? A) Event B) Duration C) Directions D) Attendance Answer: Event Q: A salesperson is authorized to sell 12 products; a product can be sold by 10 salespersons. Which kind of binary relationship is described in this example? A) One-to-one B) One-to-many C) Many-to-many D) Associative Answer: Many-t...

BDS Exam 1 Questions & Answers 2024/2025 Entity supertype - ANSWERSGeneric entity type related to one or more entity subtypes, Contains common characteristics Entity subtype - ANSWERSContains unique characteristics of each entity subtype Specialization hierarchy - ANSWERSA hierarchy based on the top-down process of identifying lower-level, more specific entity SUBtypes from a higher-level entity SUPERtype; a SUBtype can only exist within the context of a SUPERtype What is a subtype...

CNIT 272 Final Exam Questions and Answers Rated A A Primary Key having the fewest number of attributes to make it unique is called. Minimization If the child entity requires the primary key of the parent entity for its unique identity, then you create ______. Identifying Relationship If each child record has a unique identifier of its own, then the relationship is know as a _______. Non-Identifying Relationship Entities that have no foreign keys in their pk. Independent Entity Entities that...