Join two relation in DBMS

Q: oin three relation in dbms and operators select, project operation after joining

A: Relational algebra is a query language. It consists of different operations such as: Join…

Q: Consider the following database with the below relations: customer-id 192-83-7465 019-28-3746…

A: The answers are given in the below step

Q: In fig 2, what type of single level ordered index would be deployed by the DBMS for the attribute…

A: Primary Index would be deployed by DBMS for the given attribute RENTALS.CID

Q: Implement a new independent entity phone in the Sakila database. Attributes and relationships are…

A: All lower case Underscore separator between root and suffix Foreign keys have the same name as…

Q: Redundancy O False

A: Explanation: Decomposition is a technique for removing anomalies, inconsistencies, and redundancy…

Q: What are homonyms and synonyms, and why should you avoid them while constructing a database

A: answer is

Q: What are the benefits of normalisation methods that use functional dependencies?

A: Normalization is the process of organizing the data in the database. Normalization is used to…

Q: An entity whose presence depends on the presence of another entity in the database is a weak entity.…

A: A weak entity in database design refers to an entity type that does not have a primary key or whose…

Q: Write a database description for each of the relations shown, using SQL DDL (shorten, abbreviate, or…

A: CREATE TABLE Student_TBL(StudentID INT NOT NULL,StudentName VARCHAR(25),CONSTRAINT Student_PK…

Q: When using subtype associations, it's vital to talk about the different database table alternatives.…

A: Introduction: When using subtype associations, it's vital to talk about the different database table…

Q: The following tables form part of a database held in a relational DBMS:               Hotel…

A: 1. The question is asking about a database schema consisting of several tables in a relational…

Q: How can self-joins be utilized effectively in relational databases?

A: In relational databases, self-joins, when a table is joined with itself, are a potent approach. To…

Q: When both relations are not physically sorted but have an index on the attributes being combined, a…

A: In this question we have to understand the term provided where when both relations are not…

Q: Define “correlated subqueries”.

A: Correlated subqueries are one approach to read each row in a table and compare its values to related…

Q: Normalize the following given data to 1/2/3 NF. State the relations schema after every…

A: The key for the given relation is (SID, CID)  The FD's possible are SID->s_name,  CID->C-name,…

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.