1)A tuple is a named column of a relation. True or alse 2)Each attribute in a relation has a distinct name. T/F 3)The degree of a relation is the number of attributes it contains. T/F 4)A foreign key is the candidate key that is selected to identify tuples. T/F

Q: age gender customer ID Customers first_name name zip code last_name makes total transaction_date…

A: 1. Customers Relation (i) Name of the relation: Customers (ii) Names of its…

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: re three reasons why the main key of a relation has to be replaced with a surrogate key?

A: Here are three reasons why the main key of a relation has to be replaced with a surrogate key.

Q: A attribute in a relation is a foreign key if the _______ key from one relation is used as an…

A: A foreign key is a key used to link two tables together. This is sometimes also called as a…

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

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

Q: Mapping: Create relational schemas for the ER diagram given below. Indicate clearly the primary and…

A: The processes to generate the relational schemas for the provided Entity Relationship diagram are…

Q: Convert all relations to third normal form, if necessary, and draw a revised relational schema.

A: Given: Convert all relations to third normal form, if necessary, and draw a revised relational…

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: The type of algorithm in which decomposition of relation schema is constructed from other specific…

A: Certain algorithms are used to create relational decomposition from a set of relationships in…

Q: latitude ER Diagram longitude description Convert to relation schema location last_visited

A: A rеlational schеma is a bluеprint for a rеlational databasе. It dеfinеs thе tablеs in thе databasе,…

Q: 1)A tuple is a named column of a relation. True or alse 2)Each attribute in a relation has a…

A: Since you have asked multiple question, we will solve the first 3 questions for you. If you want any…

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

A: Relation is a property of set that we study in discrete math. Two set be said as related when it…

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

A: The Answer is

Q: Describe the differences in meaning between the terms relation and relation schema.

A: A relation schema is the combination of list of attributes and their related domain types. An…

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: 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: What are three reasons why the main key of a relation need to be replaced with a surrogate key?

A: substitute key: It is a key that has no contextual significance but is utilised in data analysis to…

Q: Which is the process of breaking a relation into multiple relations: a. Functional dependency b.…

A: This mcq is related to RDBMS.

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: In what normal form is the LOTS relation schema in the Figure with respect to the restrictive…

A: The relationship data, if it is in a first NF and all non key depend on primary attribute. Then the…

Q: Indicate all the functional dependencies and the normal form for each relation

A: The functional dependencies are the unique relationships between the attributes. For the table given…

Q: Can a composite attribute be part of a composite key

A: Composite attribute as a composite key Composite attribute is a attribute that contains more than…

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: difference between  Relation; Relationship

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

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: 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 composite primary key has a candidate key for one of its attributes. How would you react to this…

A: Definition: A key is a property or group of properties that allows us to identify a tuple in a…

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: Why would someone want to perform their computing in the cloud rather than on their local computer?

A: There are several reasons why someone might choose to perform their computing on the cloud rather…

Q: A candidate key is a characteristic that is part of a composite primary key.

A: Candidate key: It is a set of attributes that uniquely identify tuples in a table. Candidate Key is…

Q: QUESTION 5 A functional dependency is a relationship between or among : Attributes Rows Entities O…

A: Here in this question we have asked that a functional dependency is a relationship between or…

Q: 19. The ______ is the one in which the primary key of one relation is used as a normal attribute in…

A: Referential relation is the relationship that can be defined between two tables using common…

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: 3. a) A relation that does not have a composite primary key still has partial functional dependency.…

A: Answer: Answer -3(a): The correct answer is 1. TRUE Explanation:  Yes, the relation is uniquely…

Q: Briefly discuss the properties of a relation.

A: A relation in database administration is a table with rows and columns. Understanding how a relation…

Q: Question 6 Inventory Database: Customers(custid, custName, address, phone, credit Limit)…

A: From the given information in the question, to display the customer ID and the number of orders for…

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: 8 Which of the following relationships models the following statement: "My friends have nice cars" *…

A: To Do: To identify the relation.

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.