1/27/2019 · An entity supertype is an entity type in which only common attributes are implemented (described) for entity subtypes that use this supertype. ? 3. How can entity subtypes be related together? Example. Entity subtypes may or may not intersect. If a subtype of one entity may be suitable for a subtype of another entity, then this means that these subtypes of entities intersect each other..
Supertype/subtype entities are said to have a(n )_____ relationship. A)HAS-A B)IS-A C)recursive D)redundant E)multivalue. Free. Multiple Choice . Unlock to view answer. Q 86 Q 86. To represent an association pattern in an E-R model,_____. A)create a new ID-dependent entity with a 1:1 relationship to one other entity B)create a new weak,but not …
C) discriminator D) A and C E) B and C Answer: C 84) Discriminators can be _____. A) exclusive only B) inclusive only C) decisive only D) A or B E) B or C Answer: D 85) Supertype/subtype entities are said to have a(n ) _____ relationship. A) HAS-A B) IS-A C) recursive D) redundant E) multivalue Answer: B 86) To represent an association pattern in an E-R model, _____.
Databases. Entity subtype. Supertype. Examples | BestProg, Databases. Entity subtype. Supertype. Examples | BestProg, Entity Types. Workstation -> Supertype Desktop, Laptop -> Subtypes . Desktop and Laptop share the PK with the Workstation Entity Supertype . Relationships. Site – Person -> 1: n Workstation – Desktop -> 1:1 Workstation – Laptop -> 1:1. Relationships to be modeled, A subtype is drawn on an ERD as an entity inside the softbox of the supertype . True or False? Mark for Review (1) Points. True (*) False. 10. A subtype is shown on an ERD as an entity with a one to many relationship to the supertype . … A supertype can only have two subtypes and no more. True or False? Mark for Review (1) Points. True. False …
6/8/2016 · For instances that belong to the supertype and at least one other subtype . For a subtype that does not have any of the same attributes as the supertype to which it belongs. As an extra subtype to ensure that all instances of subtypes are mutually exclusive and complete. By having an “Other” subtype , all instances of the Supertype will be of …
In a physical model, many to many relationships are resolved via a structure called a(n ): _____ Mark for Review (1) Points Intersection Table Subtype Intersection Entity (*) Supertype Incorrect Incorrect. Refer to Section 9 Lesson 3. 9. One-to-Many Optional to Mandatory becomes a _____ on the Master table. Mark for Review (1) Points
