MCQS In RDBMS, each attribute is represented only even for foreign keys true false   To convert a DBMS into 1 NF, we remove all the functional dependencies from the relation true false A relation can have maximum number of attributes necessary to support the data requirements of the enterprise true false Joins in RDBMS relations are always loss-less true false

Q: When converting an ERD to a database design, Foreign key(s) for a M:N (many-many) relationship are…

A:

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: Describe three circumstances in which a substitute key for a relation's primary key should be…

A: Conditions for recommending a substitute key Three factors indicate that a surrogate key should be…

Q: database relation R into relations R₁ and R₂, we want R₂ MR₂R so that no tuples in R is lost. This…

A: In other words, lossless decomposition is a way of normalizing a database by breaking down a large…

Q: For merging two relations that are not physically sorted but share an index on the attributes in…

A: Your answer is given below.

Q: When a database is “normalized” it is restructured (according to a series of normal-forms, which we…

A: Normalized diagram with explanation.

Q: Create a form of the hybrid merge-join method that is appropriate for the situation in which both…

A: Hybrid merge join algorithm is a version of the merge join procedure, which is done on unsorted…

Q: 2 Consider the following functional dependencies for the given relation. R={A, B, C, D, E, F) AB->CD…

A: Dear Student, The answer to your question is given below -

Q: Describe three scenarios when a surrogate key should replace a relation's primary key.

A: requirements for suggesting a substitute key Three circumstances indicate that a relation's primary…

Q: MySQL Workbench 1. Normalization Concepts: Normalization is a process used in relational database…

A: Normalization: It is a process used in database design to eliminate redundancy, improve data…

Q: Based on the following functional dependencies, for the relation SCHEDULE bring it into a set of…

A: To bring the relation SCHEDULE into a set of 3NF relations, we need to identify the functional…

Q: It is necessary to develop a variation of the hybrid merge-join method in cases when both…

A: Introduction: The hybrid merge join is distinct from the merge join. We learned from the merge join…

Q: Given the following relation R and its functional dependencies, what is the key of R? R(A, B, C, D,…

A: Key is basically which closure determines all the attributes A-->B B-->E E-->C Using…

Q: It is discussed why using a normalized version of the Index metadata relation might lead to subpar…

A: Index metadata relation has been normalised. The Index metadata relation is not in first normal form…

Q: In a database, there are values a data element can take, and there are values it cannot take. In…

A: The answers are given in below sections  for each with explanation .

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: All lower case Underscore separator between root and suffix Foreign keys have the same name as…

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: There is only one error in the above code and that is the ALTER TABLE command on the address table.…

Q: Formulate the following queries in: Relational Algebra. Produce a list of the names of all…

A: There are three entity sets - Employee, Project, and Department - and a ternary relationship set -…

Q: MySQL Workbench 1. Normalization Concepts: Normalization is a process used in relational database…

A: Normalization: Normalization is a process used in database design to eliminate redundancy, improve…

Q: We discuss the potential performance issues that might arise from using a normalized version of the…

A: Version normalised of the Index metadata relation. Since the index attribute field of the relation…

Q: What are three criteria that indicate that a surrogate key for a relation's main key should be…

A: Surrogate key: It is a key that does not have any contextual meaning but is used to identify the…

Q: How does the primary key of a relation relate to the interdependencies among its other attributes…

A: Answer: A primary key-foreign key relationship characterizes a one-to-numerous connection between…

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: 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: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: SQL: Database management is done using a programming language called SQL, or Structured Query…

Q: Normalise the following relation to remove modification anomalies showing all steps for 1NF, 2NF and…

A:

Q: Many one-to-many connections may be pieced together to form a connection like the second track. Do…

A: primary key constraint in a relational database acts as a unique identifier for each row in a table.

Q: Suppose a single relation (table) is used to record the information about students’ enrollment in…

A: Actually, given question regarding normalization.

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: 5.6 LAB - Implement independent entity (Sakila) Implement a new independent entity phone in the…

A: First check whether phone_id column exists in your customer, staff, and store table or not. If…

Q: Explain what normal form the relation is in. b) Apply normalization until the 3rd State reasons…

A: A)  From the given functional dependency, primary key for the given relation is (Title, Author)  The…

Q: The Database contains 4 transactions. Find the association rules exact from these set using Apriori,…

A: Transaction A B C D E K 001 1 1 0 1 0 1 002 1 1 1 1 1 0 003 1 1 1 0 1 0 004 1 1 0 1 0 0

Q: Here are three examples of when it makes sense to create a surrogate key in place of the primary key…

A: requirements for suggesting a substitute key There are three circumstances that indicate a…

Q: How does the primary key of a relation relate to the interdependencies of its characteristics from a…

A: The primary key is a unique identifier for each record in a table. It is used to ensure that each…

Q: Explain why utilising the normalised version of the Index metadata relation would result in poor…

A: There are different typical structures in the RDBMS, for example, 1NF, 2NF and so on and there is an…

Q: When both relations are not physically sorted but have an index on the attributes being combined, a…

A: In this question we have to understand the term provided where when both relations are not…

Q: 'R' having 200 re stored in blocks Consider anothe rds and all these aoke. Those two t

A:

Q: Why may using a normalized version of the Index metadata relation lead to lower performance, and…

A: The question focuses on the impact of normalizing the Index metadata relation in a database system…

Q: Make a Propose and optimal database design in RDBMS for a super store. In which clients came and can…

A: 1.Entities: We are required to create a table of Products to store product details. To store…

Q: Let R and K be two relations under a join operation. Assume that m = |R| and n = IKI, then the…

A: Given that, R and K are two relations under a join operation m= |R|, number of rows in R n= |K|,…

Q: Primary key identifies a unique tuple of a relation, true or false?

A: Primary key is a specific choice of a minimal set of attributes that uniquely specify a tuple in a…

Q: Discuss the alternative ways that normalization can be used to support database     design.…

A: Answer: There are so many alternative way to normalized databases design.

Q: The following is the relation notation of a database table in 1NF ORDER(CustNum, CustFN, CustLN,…

A: CustNum CustFN, CustLN : This dependency indicates that CustFN and CustLN are functionally depend on…