Two students want to enroll in a course with one place. What database feature prevents both students from earning the last seat?

Q: Explain the strategies to execute relational query in parallel DB environment with an example

A: Databases:A database is a structured collection of data that is organized and stored in a way that…

Q: Removing columns that meet specified criteria is the goal of a select operation in relational…

A: Introduction: Union, intersection, and set difference are the three main relational set operations.…

Q: Explain the strategies to execute relational query in parallel DB environment with an example

A: A parallel database is a database system that uses multiple processors and storage devices…

Q: Create a database that contains four tables department, employee, address and contact info, then…

A: SQL (Structured Query Language) is a standardized programming language that's used to manage…

Q: Two students are registered for one course. Can both students get the last database seat?

A: Given: There are two college students that must sign up for the course. But, there is just one seat,…

Q: Consider the following Relations Employee(employee_name, street, city) Works(employee_name,…

A: Both the questions are related to SQL Joins. It is used to combine multiple tables into one with a…

Q: The Car Maintenance team also wants to store the actual maintenance operations in the database. The…

A: DELETE CASCADE: - When we constitute a foreign key using this option, it deletes the referencing…

Q: Execute Queries to Retrieve Information from the AdventureWorks database 6. 1. List all employees…

A: 1)List all employees with their ID, last name, first name, job title, and date of birth. Sort the…

Q: Why not make a search for each field in the database table?

A: Searching each field in a DB table might be costly regarding processing resources, mainly when…

Q: Removing columns that meet specified criteria is the goal of a select operation in relational…

A: In the above question it has been asked the purpose of SELECT command. Select operator is a unary…

Q: Create a relational database model for primary school. The mode should contain at least 4 tables:…

A: logic:-  these are 4 tables with attributes:-  student:- sid, sname, address, contact, subid(foreign…

Q: Create the following table in your database with the following schema: Table: Customer +- | Column…

A: syntax to create table:-  create table tableName(column_name data_type constraint); syntax to insert…

Q: Practical 1: Write a menu driven program that runs till the user desires, Menu is given below with…

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

Q: To make the TAL Distributors database run more efficiently, the DBA denormalized part of the data,…

A: A DBA, short for Database Administrator, is a professional responsible for managing and maintaining…

Q: What is the difference between a PRIMARY KEY constraint and a UNIQUE constraint? ( refer to the…

A: Primary key is one of the columns of the table which uniquely identifies each row in that table.…

Q: a new user “Udev” is joined to the company as developer. “Udev” need to create tables and procedures…

A: udev provides a dynamic device directory containing only the files for actually present devices. It…

Q: lease provide MySQL query(ies) for this assignment: "Create a database of 10 students with…

A: Create a database of 10 students with firstname, lastname, studentID, gpa, grade are as follows:

Q: |The statements select RIGHT('l wish I had attended the practice hours', 9) and select…

A: I have provided a solution in step2.

Q: Define Null in a database table and write any three features of Null.

A: In the database, NULL is no value that is not zero. The table in the database contains NULL value…

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.