Figure Q5.8 The Product Data Model PRODUCT PK Prad Num Prod Te Prod RaieaneDate Prod Pre Pred Tye ProType BOOK PKFKI Prad Num Book CoverType CD MOVIE PKFKI Prod Num PKFKI Prod um ook PegeCont CD Oere CD A Movie Rating Movie Director 9. According to the data model, is it required that every entity instance in the PRODUCT table be associated with an entity instance in the CD table? Why, or why not?

Q: I am working on creating a logical entity relationship diagram for my database class. I am wondering…

A: INTRODUCTION: Although the full problem description is not given so deducing the problem /…

Q: QUESTION 2 in ERD, an Entity with a partial key is named: O Partial Entity O Srong Entity O Weak…

A: Strong Entity is an entity which is not dependent on other entity and have a primary key. Its…

Q: A weak entity set depends on another entity set for all or part of its key. Select one: O a. False…

A: Since weak entity dont have its own primary key, it depends on another entity, and weak entity have…

Q: Q3. Map the following relational model to an ER Model EMPLOYEE PK FK: EmpID EmpID EmpFName EmpLName…

A: Employee contains Primary key of its own entity as foreign key. Therefore the entity has relation…

Q: in ERD, an Entity with a partial key is named: O Weak Entity O Srong Entity O Partial Entity O…

A: Answer : option A is correct weak entity .

Q: of the following best describes a relationship in which each instance ofdata in one entity is…

A: It is defined as an association between two entity types is called a relationship. Entities take…

Q: An entity student has a derived attribute "age". When mapping ER Diagram to schema, you place…

A: We have an entity 'student' has a derived attribute "age". When mapping ER Diagram to schema, where…

Q: QUESTION 6 There will be three tables after converting the following conceptual diagram into the…

A: 6)  Answer :-- False It will converted into two table table A with two fields named field1 and…

Q: 3.1 Normalize TABLE 2 below to 2NF TABLE 2 Studentnum 401 Course CSE Math CSE, CSE, applied stats…

A: The given problems are related to the database designing and normalization where    3.1) Needs to…

Q: Translate the following ER Diagram into relational model. Show different relations that will result…

A: Relational Model is used for modelling data in the form of relations or tables. It represents how…

Q: An attribute that may take on more than one value for each entity instance in ERD is referred to as…

A: Answer :- option D) multivalued attribute

Q: STION 9 is used to represent the M: N relationships between two or more entities. A Mandatory B.…

A: M:N relationship: Relationships helps to connect the  related information between the  tables. They…

Q: Differentiate between weak entity set and strong entity set. Give example drawing ERD for the weak…

A: Entity: An entity could be any physical or virtual real-world object that can be accurately…

Q: Complete the Entity Relationship Diagram for the remaining entities in the Data Schema & Dependency…

A: The entities in the given case study are CAMPUS and CLASSROOM. Identify the attributes of each…

Q: State a rule that says when to extract an attribute from one entity type and place it in a linked…

A: Let’s first understand what is entity type and attributes: Entity Type: A group of different…

Q: After mapping the following ER diagram to relational schema, attribute #_employees: * . supplier…

A: In the given ER diagram, #_employees is an attribute for Branch entity.

Q: Develop an Entity Relationships Diagram (ERD) based on the relational schemas in the 3NF for the…

A: For a relation to be in 3rd Normal Form or 3NF following conditions need to be met: Each table cell…

Q: 2.Given the following database in Figure 1 Employee(ssn:int,name:string.jobTitle:string)…

A: Entity Relationship Diagram (ERD) or Entity Relationship Diagram (ERD) is a diagram that shows the…

Q: consists of three relations, whose schemas are: Sailors(sid, sname, rating, age) Boats(bid, bname,…

A: We are going to write relational algebra query for the query - finding all information of sailors…

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. Draw ER- notation for the given elements of ER-Model. 1. Entities a. Strong Entity b. Weak Entity…

A: Strong Entity: Weak Entity: Associate Entry:

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

A: As per our company guidelines we are supposed to answer ?️only first 3️⃣ sub-parts. Kindly repost…

Q: nvert the following ERD in Chen's notation to an ERD in IE notation. All entities, attributes, and…

A: The answer for the given question is as follows

Q: Consider the E-R diagram for a university database as shown in Figure 1. Detect the weak entity…

A: Explanation: Weak entity is an entity that is depend on strong entity to ensure the existence of…

Q: Explain how functional dependencies can be used to indicate the following: • A one-to-one…

A: Identifying the functional dependencies: The relationship sets can be indicated using the functional…

Q: Complete entity attributes the way you like brid. hid Thas_branch Hotel Branch supdate quantity work…

A: For the hotel schema hid is the primary key which remains unique to each hotel and brid and eid are…

Q: Consider the generalization and specialization lattice structure below (attributes not shown).…

A: Given: Consider the generalization and specialization lattice structure below (attributes not…

Q: The descriptive property possessed by cach entity set is atn): A Attribute. B Instance. C Relation.…

A: The descriptive property possessed by each entity set is a(n), Then correct option is A. A.…

Q: Explain how functional dependencies can be used to indicate the following:• A one-to-one…

A: The functional dependency is a relationship that exists between two attributes. It typically exists…

Q: a. What characteristics do tables that conform to the concept of well-informed relations have? b.…

A: Actually all this three concept are related to database.

Q: A college wants you to help design a star schema to record grades for courses completed by students.…

A: Here we make simple star schema : Answer 1:…

Q: n the attached diagram, which of the following statements are true?       primary key for section…

A: Weak entities are represented with double rectangular box in the ER Diagram and the identifying…

Q: Consider the E-R diagram for a university database as shown in Figure 1. What is true about grade?…

A: “grade” represents an entity associated with the relationship “takes” in the given…

Q: QUESTION 4   For the following collection of entities, give the assumptions concerning the…

A: Given entities: ORDER (order#, ordDate, cust#, cName ) ORDER_PART ( order#, part#, quantity )  PART…

Q: Q. A/ Consider a STUDENT relation with the following attributes (St ld, St Name, St_Stage, Average,…

A: In order to design the student table with with attributes St_id (which is the student id), St_Name…

Q: Consider the following ERD. Draw the Logical schema for the ERD. Underline the primary keys. (IName…

A: The Answer is

Q: Transform the following Entity Relationship Model into Relational Schema. DeptiD EmpiD DName Name…

A: The term "schema" refers to the organization of data as a blueprint of how the database is…

Q: The ER diagram below model the football league games and contains three entities and three…

A: The answer is

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

A: 1)Entity Relationship Diagram for the system:-

Q: Suppose that the following are true: - all id column are primary keys in whichever table they are -…

A: A relational database contains tables. Tables have data arranged in rows and columns like a grid. A…

Q: Entity-Relationship Diagram (ERD) is one of the data modeling tools that provides a software…

A:

Q: Illustrate an Entity-Relationship Diagram (ERD) model using Crow’s Foot notation  Here we can have…

A:

Q: You are given as an input, the following Entity-Relationship diagram, that is meant to be one…

A: Here is the data model.

Q: Which of the following best describes a relationship in which each instance of data in one entity…

A: Explanation:   a. one-to-one - here each instance of data in one entity is described by one instance…

Q: Based on Entity Relationship Diagram (ERD) below; a) Write the correct business rules for all…

A: The question has given an entity-relationship diagram that shows the entities and their attributes…

Q: When an attribute should be extracted from one entity type and placed in a related entity type,…

A: The answer is given below:-

Q: Given the dependency diagram below, create the set of dependency diagrams that would as shown next…

A: 3NF: A relation can be in 3NF if the relation must be in 2NF and not contain any transitive partial…

Q: Given the entity CAR with a multivalued attribute CAR_COLOR and attributes CAR_MODEL and primary key…

A: ROUNDED RECTANGLE SHOWS CAR ENTITY . DOTTED OVAL SHOWS DERIVED ATTRIBUTE. DOUBLE OVAL SHOWS…

Q: Suppose that Heather Sweeney wants to include records of her consulting services in her database.…

A:

Q: single instance of the entity?  There must be a maximum of one attribute instance. There must be…

A: Below are the correct options:  There must be a maximum of one attribute instance. There must be at…