When moving a weak entity from the ER model to relational schema, describe what makes up the primary key of the relation that the weak entity becomes. For the toolbar, press ALT F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph Arial 14px ... x X T Te

Q: What is the most common method of specifying a primary key in a relational schema description?…

A: Method of specifying primary key in relational schema

Q: Create an E-R model for the following scenario. Show entity names, primary keys, attributes for each…

A: We need to create ER diagram for above case studies See below step for diagram.

Q: Diagramming is a "top down" user process.  Take the following user provided information and draw the…

A: the diagram is an given below :

Q: Given the following EER diagram, write down the corresponding relations using the method taught in…

A: The answer is

Q: ID name Courses M semester Teaches N ID name Professors Convert the above ER diagram to relations in…

A: SOLUTION -From the above Entity Relationship Diagram, we can identify three tables. They are1)…

Q: Question: Consider the relation: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q), {A, B} is the…

A: R(A, B, C, D, E, F, G, H, I, J, K, L,M,N,O,P,Q) Candidate key: {A, B}, {C,D,E}Prime attributes Non…

Q: Translate the E/R diagram that you draw in the previous question into a set of relations, clearly…

A: Given Figure :-

Q: An ID-dependent Weak Entity typically result in a table with a compound primary key with at least…

A: A weak entity in a relational database is one that can't be uniquely identified by just its…

Q: The use of composite attributes are avoided in relation schema when the relation schema conforms to…

A: The use of composite attributes, are avoided in a relation schema when it is said to be in First…

Q: Show that if a relation has no attribute that is functionally determined by all the other…

A: Introduction   Show that if a relation has no attribute that is functionally determined by all the…

Q: # Question 1. Please select the correct statement(s) regarding a key constraint for a relation. An…

A:

Q: 1. Total participation is where each entity participates in at least one relationship in the…

A: 1- True, Each entity in the entity set is involved in at least one relationship in a relationship…

Q: What are three advantages of using a surrogate key rather than the main key to access a relation…

A: A surrogate key is a one of a type of identifier for a record or item in the table. It is comparable…

Q: Diagram into a col y of the constraints as possible. ote: Courses is a weak entity set, and Number…

A: the relational schema is given below

Q: Extract and write down the DB Schema for the following E-R Diagram. You need to write the name,…

A: Terminology used in this E-R diagram:

Q: Assume a relation schema R(a, b, c, d, e, f) with primary key (a, b) and the following full func-…

A: Functional Dependencies:- Functional dependencies are the result of the interrelationship between…

Q: Map the following ER-Diagram into schema Diagram. Note: Must state the PK/FK example R3(A7/Pk, A5,…

A: The relationship between 1 and 2 is 1:M. So we need to include primary key of relation 1 as foreign…

Q: Demonstrate that if a relation contains no property that is functionally determined by all of the…

A: Introduction   Show that if a relation has no attribute that is functionally determined by all the…

Q: Let R and S be two relations with the following schemas R (P.Q.R1,R2,R3) and S (P.Q,S1,S₂), where…

A: Join statement is used to combine data or rows from two or more tables based on a common field…

Q: see of representing relations as a graph or a matrix? What is one way that you might use either a…

A: A graph matrix is a square array that has one row and one column for each node in the graph. Node I…

Q: Consider a relation (A, B, C, D, E, F, G) with functional dependencies as given below: ABC D ED-F…

A: Consider the following relation with set of functional dependencies: R (A, B, C, D, E, F, G)…

Q: Suppose you have a Relation that has an atomic Primary Key and noRepeating Groups. All non-key…

A: According to the details provided about the relation, the relation is in 2NF. This relation has to…

Q: Newbie to relation schemas…took this example from a textbook.     How would I convert the following…

A: Normal Form: In the context of relational database design, normal form refers to a set of guidelines…

Q: Write an SQL Assertion statement to enforce the functional dependency Title → Salary for the…

A: The above question includes two concepts of Assertion Statement and Functional Dependency Title->…

Q: ID library_item title N publishes magazines journal conference_proceeding book publisher date_of…

A: Primary key attributes- magazines- date of publish, date, id journal-volume, number, id book -…

Q: Create a database schema for a dental clinic. The dental clinic has five relations, Patients,…

A: The database schema describes how data is arranged in a relational database, including logical…

Q: What are three signs that a surrogate key should be generated for the primary key of a relation…

A: A surrogate key is one that serves no practical or operational purpose. It's "artificial" and made…

Q: Please transform the following Entity-Relationship Schema (Diagram) into a Relational Schema. Please…

A: Here PNo and SSno are primary key.  The following are the entities : PROJECT, EMPLOYEE, ENGINEER The…

Q: Consider a relation with schema R(A,B,C,D,E,F,G). Choose the key for the relation for the following…

A: According to the question we need to consider a relationship with schema R(A, B, C, D, E, F, G).…

Q: Design an Entity-Relationship for each system described below. Use the (min,max) notation. State…

A: An entity is the relationship model which describes the interrelated things in a domain. A basic ER…

Q: 1. Consider the relation schema which records student grades received from courses they have taken…

A: Candidate key: - It is a collection of attributes that recognize rows in a table in a unique way. It…

Q: 1. Describe entity constraint in your own words  2. what type of key satisfies the uniqueness…

A: This constraint says that the primary key of a table can never be a null value. The primary key is…

Q: Question 2. Find a set of FDs for the relation schema R(w, X, y, z) with primary key "wx" under…

A: A set of Fd's for the relation schema R(w,x,y,z) with a primary key "WX" under R is in 2nf but not…

Q: Here is a table representing a relation named K ABC 012 345 678 Identify: 1. The attributes of R. 2.…

A: The question is asking which of the given statements is NOT true about relation R.

Q: Draw the Dependency Diagram that is in 3NF for each relation. For each relation show the level of…

A: The steps are explained below.

Q: Transform an entity-relationship (E-R) diagraminto an equivalent set of well-structured(normalized)…

A: Lets see the solution.

Q: Multivalued dependencies are avoided in relation schema when the relation schema conforms to – (a)…

A: Answer: Multivalued dependencies are avoided in relation schema when the relation conforms to 4NF.…

Q: Below are three situations where a surrogate key could replace the relation's primary key.

A: - We need to talk about three situations where a surrogate key can replace a relations primary key.

Q: For developing our queries, we will be using the following relational schema: Student(SID, name,…

A: Q1.  Here we need to join relation Course and Offering and use selection operator to select only…

Q: For a relational schema R(ABCDEFG), Following dependencies are given to you i)Find out the prime…

A: For a relational schema R(ABCDEFG), Following dependencies are given to you The answer has given…

Q: Give a Relational Model that corresponds to the Entity-Relationship Diagram in Figure 1. You must…

A: Entity Relationship diagram mainly contains 3 components, that are Entities, Relationships and…

Q: Give an SQL schema definition for the employee database of Figure 3.19.Choose an appropriate domain…

A: Given: Give an SQL schema definition for the employee database of Figure 3.19.Choose an appropriate…

Q: Which of the following is a key part of conceptual design in an entity relationship model?     This…

A: Here is explanation regarding entity relationship model.

Q: According to the university database that we explain in the class, explain how functional…

A: In the context of a university database, functional dependencies play a crucial role in indicating…

Q: Which of the following statements corresponds to the second normal form for an entity - relationship…

A: A relationship must have a key,with simphleks domains for its attributes and all non-key attributes…

Q: Consider the universal relation: R = (A, B, C, D, E, F, G, H, I, J) and the set of functional…

A: A crucial step in relational database architecture is database normalization, which entails breaking…

Q: HOMEWORK #6 Consider the following flawed ER diagram representing clubs and their activities. ID…

A: Club (ID, name) Activity (date, time, description, building, room, capacity, sponsor) Room…

Q: Choose the resultant relation(s) after transforming the below ERD. A2 A1 A3 ENTITY A Rel O A.…

A: A relationship between two entities of a similar entity type is called a recursive relationship.…

Q: a relational schema {A, B, C, D, E, F, G} and let F be the set of functional dependencies F = {AB→C,…

A: In the realm of database systems, particularly within relational databases, functional dependencies…