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

Q: Code for Mapping relationship with Entity Framework Code First: One-to-one and variations

A: Code to map one-to-one type relationships using Entity Framework.

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: Which of the following is another term for a recursive relationship? Group of answer choices ternary…

A: Ternery relationship is one which involves 3 distinct entitiesBinary relationship is one which…

Q: What are the conditions under which an attribute of a relation may have a changeable length?

A: Introduction: An attribute is defined as a trait or characteristic found in a person, a place, or an…

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: What is Ternary Relationship?

A: Given: What is Ternary Relationship?

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

A: Answer:

Q: Consider the following dependency diagram: A B D E F a. the relationship between attribute A and…

A: According to question we have to  Consider the following dependency diagram and answer following…

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

A: Conditions to suggest a surrogate key Three conditions that suggest a surrogate key should be…

Q: Give some special guidelines for naming entity types

A: Guidelines for Entity Types: The entity name should be singular. It should be very specific and…

Q: Explain entity sets.

A: Entity sets are a fundamental concept in the field of entity-relationship modeling, which is used to…

Q: How relation listening important?

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

Q: relation's main key and its functional interactions amongst its characteristics are interconnected

A: Please find the answer below :

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: It is the relation among individual entities and values. O principles patterns state relation

A: In  Step 2, I have provided   correct  option-----

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: School system scenario Students come at the beginning of the school year to register in a school…

A:

Q: Computer science Explain how the primary key in the same relation is referenced.

A: Introduction: The primary key constraint requires that each row in the relational database…

Q: When is it necessary to represent a many-to-many connection using an associative entity?

A: Associative entity modeling A connection that has been turned into an entity with characteristics is…

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: 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: 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: When is it important to use an associative entity to express a many-to-many relationship?

A: According to the question many to many is used to makes relationship between two or more data or if…

Q: Describe three situations in which a substitute key for the main key of a relation should be…

A: Given: Indicators that point to the existence of a surrogate keyThere are three circumstances that…

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: True or False: Every primary key of a relation is a superkey    No hand written and fast answer…

A: The solution is given below for the above given question:

Q: When it comes to relationships, what is the connection between the main key of a relation and the…

A: The connection between the main key of a relation and the functional dependencies among all…

Q: BANK Code Name Addr Phone BRANCHES ACCTS Acct no San Balance ACCOUNT A.C Name CUSTOMER Type BANK…

A: Relational model corresponding to given ER Diagram of Bank database systems:   1. BANK(Code, Name,…

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: 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: Suppose you are going to design an instant messaging application called Telegraph. Telegraph is…

A: It is defined as a collection of information that is organized so that it can be easily accessed,…

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…

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.