What is a primary key?

Q: What are the conditions where a foreign key must not be null.

A: GIVEN: What are the conditions where a foreign key must not be null?

Q: Please what is an independent clause

A: Actually, given question is independent clause...

Q: SOSL Query: Create a SOSL Query in salesforce to find the test keyword in the whole organization.…

A: Here we have to create an SOSL query in salesforce to find the test keyword. Here I have syntax for…

Q: The degree of a relation is the number of its columns. True False

A: Defined the given statement as true or false

Q: Explain the difference between the WHERE and HAVING clause.

A: Where filters the record from the table. Having filter the record from the group. Where clause can…

Q: How is a foreign key different from a primary key?

A: Primary key is an attribute of a relation which is used to uniquely identity each tuple of the…

Q: What does it mean to have a key that is one of a kind?

A: The key is the data item that uniquely identifies the record. In other words, a key is a set of…

Q: Explain the difference between main key, candidate key, and superkey..

A: Differentiation between main key, candidate key, and super key A super key is any collection of…

Q: what is the purpose of Where and having Clause?

A: Structured Query Language is abbreviated as SQL or also pronounced as See-Qwell. It is developed for…

Q: What is CLAUSE?

A: INTRODUCTION: SQL is a query language that allows you to query and get data from a database.…

Q: What is the purpose of using a group clause?

A: What is the purpose of using a group clause?

Q: Give an example of the word "foreign key

A: Please find the answer below :

Q: Which standard form mandates that no non-key attribute be functionally dependent on a portion of the…

A: Introduction: Relation R is in the second standard form (2NF) if it is in the first normal form…

Q: Each key that meets the criteria for a primary key is called functional key a O lookup key b O…

A: According to the asked question, the solution is given below with a proper explanation.

Q: Describe how a foreign key is different from a primary key

A: Difference between foreign and primary key:

Q: group

A: SQL stands for structured query language and has a number of clauses to run queries. Major and…

Q: What is the binary relationship?

A: Binary relationship A Binary Relationship is a relationship between two different Entities which…

Q: What are the references to the main key in the same relation?

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

Q: Employee EMPNO NUMBER(4) - Primary Key VARCHAR2(10)- Not Null VARCHAR2(9) DATE NUMBER(7,2) NUMBER(2)…

A: The Answer is in below step...

Q: What exactly is a foreign key?

A: Intro Foreign keys are columns or groups of columns in a relational database table that serve as a…

Q: What is the meaning of the primary key?

A: A primary key, sometimes known as the main keyword, is a unique identifier for each entry in a…

Q: What is a unique key?

A: What is a unique key?

Q: Why are subqueries used?

A: Given:   Why are subqueries used?

Q: What does the group by clause accomplish?

A: group by clause is used in relational database with select statement. In select statement group by…

Q: explain the function of the FOREIGN KEY definition.

A: Functions of Foreign Key: It ensures that data is integral It is a constraint that prevents actions…

Q: II. In the below given table, identify the correct table names & Keys after 3NF. Table Name Primary…

A: Below is the answer:

Q: Give an example of a primary key

A: Answer: Primary Key: It is a key that can uniquely identify the each record in a table.

Q: According to the figure, the primary key is :

A: The correct answer is ProjectID. Explanation is provided in the 2nd step

Q: What Exactly Are Stored Procedures?

A: INtroduction the question is about What Exactly Are Stored Procedures and here is the solution in…

Q: What are the differences between main key, candidate key, and superkey?

A: This question expanse abut main key, candidate key, and super key

Q: what is Foreign key ?

A: A FOREIGN KEY is a field or collection of fields in a table that refers to the primary key in…

Q: Use the following table to answer the questions below: Table name: Customers Column Name Role Data…

A: As per our guidelines, we are supposed to answer only 1st 3 parts. Kindly repost the remaining…

Q: What is Order By clause ?

A: Order By clause An Order By clause specifies that a Structured Query Language (SQL) SELECT…

Q: Explain the difference between a primary key and a candidate key.

A: GIVEN: Explain the difference between a primary key and a candidate key.

Q: Discuss the difference between a Superkey and a Secondary key

A: Database Management System(DBMS) is a software for storing and retrieving users data while…

Q: A foreign key should normally have the same name as the primary key from which it was copied. Group…

A: It is a RDBMS based question.

Q: Database sql 1-Write the syntax to create an object table called people using people_type

A: Syntax for creating tables:-  Create table table name(colName datatype);

Q: When should a subquery be nested in a HAVING clause?

A: Sub query nested in a HAVING clause HAVING clause is used to filter groups of rows. It specifies…

Q: Explain the difference between Primary Key and Foreign Key , give example

A: We are going to understand difference between Primary Key and Foreign Key along with examples.

Q: What is the difference between a main key and a candidate key?

A: Foundation: Candidate keys are selected to uniquely identify tuples in a database, and the primary…

Q: 22. The primary key is selected from the: a. composite keys b. determinants c. candidate keys d.…

A: c) Candidate keys

Q: 10. The minimal set of super key is called a. Primary key b. Secondary key c. Candidate key d.…

A: Please see the next step for answer.