109. The constraint violated when key value in tuple already exists in some other relation's tuple is called a. domain constraint b. attribute constraint c. key constraint d. lock constraint

Q: Please written by computer source The following relation is an extract from a restaurant…

A: Introduction : This question involves analyzing a relation from a restaurant point-of-sale (POS)…

Q: A relation R on a set S, defined as x R y if and only if y R x. This is an example of? a) reflexive…

A:

Q: What does the phrase "disjointness constraint" mean?

A: Start: One relationship's super type might be another's subtype. Super type/subtype hierarchies are…

Q: Analyze the following relation, a) write the types of functional dependencies; c) perform the…

A: For the above table, keys are not defined. Keys can be identified using real time conditions. For…

Q: Give examples of relations that are: (a) reflexive and symmetric but not transitive (b) reflexive…

A: (a) Reflexive and symmetric but not transitive:   Let's consider a set A = {1, 2, 3}, and define a…

Q: Type ISBN eBook RelationName2 (AttrName1) Primary key {AttrName1) Price Book N Order Hardcopy Date…

A: Here are the resulting relation tables from the given E-R diagram:Table Book:Primary Key:…

Q: Schema: Part(PartNo, PartName, VehicleType, UnitPrice, SalesPrice) Service(ServiceNo, PartNo,…

A: CREATE OR replace FUNCTION getprofit (    p_part_number IN NUMBER) RETURN NUMBER IS    l_part_name…

Q: How did you normalize the following relation? When the PK is (Room#, Reservation#). Name Phone email…

A: Introduction: Normalization is the most popular method of rearranging data in a data collection so…

Q: What precisely do you mean when you say that a dependence is transitive?

A: Different kinds of functional dependencies in DBMS: A relation between two properties of a related…

Q: 105. The type of constraint which states that not even a single value with primary key can be a null…

A: Please see the next step for answer.

Q: 113. The template conclusion is a set of tuples that must be included in the relations in the…

A: Please find the answer to the above question below:

Q: First normal form a) prohibits multi-valued attributes b) prohibits composite attributes c) is…

A: In the context of relational databases, A normal form is a set of rules that a database schema must…

Q: lation R on a set S, defined as x R y if and only if y R x. This is an example of? a) reflexive…

A: Introduction: A relation R on a set S, defined as x R y if and only if y R x. This is an example…

Q: What's the difference between disjoint and overlapping constraints?

A: The answer is given below step.The difference between disjoint and overlapping constraints is given…

Q: A relation takes a students identification number at your college as input and outputs the students…

A: A relation takes a students identification number at your college as input and outputs the students…

Q: Three relations are given to you, R1(A, B, C), R2(C, D, E), and R3(E, F). The primary keys for R1 ,…

A: a)  Consider the given three relations r1, r2, and r3. • In relational algebra joins exhibit the…

Q: The normal form which consider all the types of constraints and dependencies is classified as a.…

A: Domain-key normal form is a normal form used in database normalization which requires that the…