Convert the following ER Model to Relation   Model

Q: Use normalization to decompose a relation with anomalies into well-structured relations?

A: Yes, Normalization are used to decompose a relationship with anamolies into a well structured…

Q: Map the following ER diagram into relational schema showing foreign keys and primary keys. Cl is…

A: Relationship R3 ans R2 are identifying relationship and entity E3 is weak entity.  Thus it will…

Q: Map the following ER Model to the Relational Model.

A: The given is an entity-relationship diagram which shows the entities and corresponding relationship…

Q: Determine the characteristics of the * .relation aRb if a2 = b2

A: Determine the characteristics of the relation aRb if a2 = b2

Q: Differentiate between weak entity set and strong entity set

A: Note: There are multiple questions are given in one question. According to the rule, you will get…

Q: Normalise the answer from Q.5.2 to third normal form (3NF), showing all steps with explanations. The…

A: Please check the step 2 for solution

Q: List three conditions that suggest a surrogate key should be created for the primary key of a…

A: To be determine: List three conditions that suggest a surrogate key should be created for the…

Q: Computer Science: Why normalized relations may not compromise an efficient physical implementation…

A: Inconsistently stored data can create  number of problems. A poorly designed database may provide…

Q: Draw an ER diagram expressing the total participation of an entity type “BURGER” in a binary…

A: Answer: I have given answered in the handwritten format in brief explanation

Q: The decomposition of one relation say R into two relations is classified as a. functional…

A: c) binary decomposition

Q: Under what circumstances can an attribute of a relation be of variable length?

A: An attribute of a relation is the characteristic which is specified in a column. A relation is a…

Q: Briefly describe four problems that may arise when merging relations

A: Four problems arise during merging relations and its solution Relation:The relation is a…

Q: dentify the set of functional dependencies in the relation instance CAR shown n

A: Actually, data base is used to stores the data.

Q: LGCUSTCMER LGBRAND PK Cust Code PK Brand ID Cust Fname Cust Lname Cust Street Cust City Cust State…

A: Although Second Normal Form (2NF) relations have less repetition than those in 1NF, they might in…

Q: Convert the following ERD to relation schemas. EXPLAIN your answer. Dept Course number Name Name Id…

A: The Answer is

Q: Q4. By giving an example, define the following terms: a. Coding: b. Relation and Relationship:

A: A set of programs which is used to store and retrieve the data is called Database. Its a collection…

Q: For the following relations El(ALA2A3,81) E2(61,82,83) EMCI,ALA2 E4(D1,D2.A1) a. Determine the P.K…

A: The answer for a and b is given below:

Q: Translate well-structured relations into efficientdatabase tables.

A: answer is

Q: Define the term Well-structured relation?

A: Well-structured relation • A well-structured relation is defined as the phenomenon where the…

Q: example

A: Ternary relations:- When three entities are involved and taking part in a relationship then it is…

Q: How can we define relation? Identify the characteristics that make up a relation.

A: The table in the relational database or the relationships created between the same tables using…

Q: Define the term normalization and functional dependency of 1nf,2nf,3nf as used in normalization

A: Normalization and 1nf,2nf,3nf used in normalizationNormalization is a database design technique that…

Q: Map the car sale ER schema into a relation schema. Specify all primary keys (underline) and foreign…

A:

Q: Give examples of relations (tables) that could have more than one candidate key.

A: You are asking the example of relation that can have more than one candidate key. Let me explain-…

Q: Give an example of a relation with a unique composite key

A: A unique key is one that identifies a row in a relation uniquely. The unique key may be combination…

Q: Summarize six important properties of relations

A: Given: Summarize six important properties of relations

Q: Convert the following ER diagram into a relation table.

A: Given:Convert the following ER diagram into a relation table.

Q: List all nontrivial functional dependencies satisfied by the relation of Figure7.18.

A: Given: List all nontrivial functional dependencies satisfied by the relation of Figure7.18.

Q: The "Annual_Sal" attribute in the "BOOK" Entity type is considered as:

A: ER diagram is also called as the Entity Relationship diagram. In the above ER diagram BOOK is the…

Q: rence relation is defined as 1

A: Given:Solved using divide and conquer approach    nr=n-1r-1+n-1r Function  Xn,r  if  (r=0  or n=r)…

Q: Define the term Relation?

A: Answer: A relation between two sets is a collection of ordered pairs containing one object from…

Q: relation

A: Given :-   Let there be a relation R (A, B, C, D, E) with FD (i.e. functional dependency) set , FD…

Q: Normalize following relation up to 3NF: Bank(acno, cust_name, ac_type, bal, int_rate, cust_city,…

A: According to the information given:- We have to Normalize following relation up to 3NF.

Q: E-R diagram to a set of relations.

A: Given :- An ER diagram is given in the above question   Need to write the corresponding Relational…

Q: Define Unary Relationship. Give example by using Entity Relationship Diagram

A: Note: we are only allowed to solve one question in one post. I am solving the first on here. To get…

Q: 1)write requirement and analysis to make university database. 2) write relation tables and relation…

A: Step 1) Entity IdentificationWe have three entities StudentCourseProfessor

Q: Three instances in which a surrogate key should be constructed for the relation's primary key

A: The following are some of the reasons for creating a surrogate key: When gathering dimensional data…

Q: define UNIQUE and NON-UNIQUE indexes for relations.

A: Unique indexes are indexes that help maintain data integrity by ensuring that no two rows of data in…

Q: translate the following er diagram  1. normalize the relations to 3NF

A: Dear Student, The 3nf transformation is given below

Q: en Entity and ent

A: An entity cluster is a "virtual" entity type that is used in the ERD to represent multiple entities…

Q: Mapping from EER to Relational Model

A: Steps to map relationship between two entities : Make a table to represent a relationship. Add the…

Q: Define the connection between a relation's main key and the functional relationships between all of…

A: Introduction: As the name implies, a functional relationship expresses the influence of one variable…

Q: Write a relation algebra based on the following algebra: Book (BookID, Price, Year, Author,…

A: Relation algebra uses operators to perform the query. It provides the theoretical foundation for…

Q: to Relational

A: Steps to map relationship between two entities : Make a table to represent a relationship. Add the…

Q: Question 1: Map the following ER diagram into a relation schema. Show the different constraints. r1…

A: For the given ER diagram , we are going to map it into relation schema .  I have done it step-wise…

Q: Identify the reasons why this relation is not in 3NF.

A: Given:'   Identify the reasons why this relation is not in 3NF.

Q: Convert to 1NF Relation Draw dependency diagram showing all functional dependencies Identify…

A: Rule to convert this tale into 1 NF:-

Q: A- Determine the primary key and the foreign keys ( if exist ) for each relation : RELATION PRIMARY…

A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

Q: Explanation of three circumstances in which a surrogate key should be established for the main key…

A: Introduction: An entity in the client's business or an object in the database that is not the…

Q: Normalize the following given data to 1/2/3 NF. State the relations schema after every…

A: The key for the given relation is (SID, CID)  The FD's possible are SID->s_name,  CID->C-name,…