Briefly discuss the properties of a relation.

Q: Based on the properties of a relation, explain why the following is not an example of a relation:…

A: The given table has duplicate rows. Row1 and 2 are duplicated Row 4 and 5 are duplicated

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: explanation of three situations in which a relation's secondary key should be set in place of the…

A: The detailed solution is given in the next step.

Q: Why do the functional dependencies among a relation's attributes have to do with the primary key of…

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

Q: A relation cannot have: Multi-values attributes Several super-keys O Composite attributes Attributes…

A: Answer:

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: 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: What problems might arise from vertically partitioning a relation?

A: Issues of vertical partitioning Vertical Partitioning: The separation of the logical_ relation…

Q: How relation listening important?

A: The relationship that is built between people when they communicate is the focus of relational…

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: Write a relation from a given digraph. b) Determine properties. c) Write in a matrix form.

A: Consider the given digraph:

Q: An attributes in a relation coming from another relation is called: * O foreign key fields…

A: An attributes in relation coming from another relation is called

Q: Computer science What is the relationship between the primary key of a relation and the…

A: The Answer is in step2

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: One-to-many relationships are defined.

A: Below is the answer :

Q: How does a relation's primary key affect its attributes' functional dependencies?

A: Introduction: Relational databases are widely used in modern computing systems to store and manage…

Q: explanation of three situations in which a relation's secondary key should be set in place of the…

A: requirements for recommending a surrogate There are three circumstances that indicate a relation's…

Q: Explain three scenarios in which a surrogate key for a relation's primary key should be generated.

A: Introduction Explain three scenarios in which a surrogate key for a relation's primary key should be…

Q: How do you know whether to convert a relationship to an associative entity type?

A: These entities are used when user wants a relationship to be mixed in a relationship.For example…

Q: Give two examples of a relation and their candidate key

A: Candidate key :                          A candidate key is a set of characteristics that uniquely…

Q: An explanation of the three circumstances in which the secondary key of a relation should be used…

A: Indicators that point to the existence of a surrogate key There are three circumstances that point…

Q: What is PrOPertieS Of relAtiOnS?

A: Given:  Properties of Relation

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: difference between  Relation; Relationship

A: A relation refers to a single table in an RDBMS, whereas a relationship refers to a combination of…

Q: What exactly does it mean to define a relation? Determine the aspects that contribute to the…

A: Start: A connection is the same thing as a table with two dimensions.  It includes a certain…

Q: What does the term "relationship" mean? What are the qualities of a relation defined as?

A: A relation is a table with two dimensions. It includes the quantity of columns and rows (tuples)…

Q: A foreign key can refer to only the candidate key of another relation. (a) True (b)False

A: A foreign key is a field or a set of fields (columns) in a relational database table that is used to…

Q: A "candidate key" is: any set of fields that determines the values of all other fields functionally…

A: Let's break down the other options:"any set of fields that determines the values of all other…

Q: ERD and Keys A hotel has many rooms.  A guest can make a reservation for one room or multiple…

A: ERD is called the Entity-Relationship model. ERD diagrams are used to draw the relationships between…

Q: A foreign key can refer to only the candidate key of another relation. (a) True (b)False

A: The primary key of one table is referred to by another table's foreign key, which is an attribute of…

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: under what three circumstances does it become necessary to generate a surrogate key in place of the…

A: This question comes from Database Management System which is a paper of Computer Science. Let's…

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: Explain the usage of attributes and the generic name for attribute in the relationship mode

A: I have provided answer in step2

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: What exactly is a Ternary Relationship, and how does it function?

A: We know that the relationship of degree three is when three entities participate in an association…

Q: What does it mean to be related? How do you define a relation's properties?

A: Introduction: A relation is a table that has two dimensions. It is divided into rows (tuples) and…

Q: What is an unnormalized relation? Is it a relation according to the definition of the word relation?

A: In a database management system, a relation is a collection of interconnected tables or a single…

Q: A ternary relationship is a relationship which includes Select one: O a. Two entities O b. Three…

A: In unary relationship, only one type of entity participate in that relationship.   In binary…

Q: Identify FIVE properties that a relation must have in the relational model.

A: A relational database is a type of database that organizes data into tables with rows and columns,…

Q: en the candida

A: Solution - In the given question, we have to discuss the differences between the candidate keys and…

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

A: The answer for the above question is given in the below step.

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

A: In relational databases, a surrogate key is an artificial primary key that is generated for a…

SQL Query

Structured Query Language is the full form of SQL. It is one of the standard languages to deal with the relational database. It is used to insert, update, delete, and search the records stored in a RDBMS. The relational databases are created and managed by using SQL.