The section contains multiple choice questions and answers on dealing with the concept of Relational Model. These include relational and schema, keys and relational query operators. 2. SQL : Queries, Constraints
DBMS - Nested Queries, Correlated Nested Queries & Set Comparison Operators DBMS - Functional Dependency & Attribute Closure DBMS - Closure Set of Attribute DBMS - Codd's 12 Rules DBMS - Relational Algebra DBMS - Extended Operators in Relational Algebra DBMS - Relational Calculus DBMS - SQL Joins...
SQL Functions Aptitude Questions | Set 3 Advance SQL Queries Aptitude Questions | Set 1 Advance SQL Queries Aptitude Questions | Set 2 DBMS Aptitude Questions and Answerscontains Aptitude Questions and Answers on DBMS Basic Concepts, Keys (Primary, Foreign, Alternative etc) related, ER Model, Relat...
(B) Inner join (C) Left outer join (D) Right outer join Q2. The Primary key must be (A) Non Null (B) Unique (C) Both of these (D) None of these Q3. Ranking of queries is done by which of the following? (A) Order by (B) Having (C) Group by (D) All of these Q4. T...
40. Queries to the database is___ Written in English Can aggregate functions such as SUM and COUNT Both (a) and (b) None of these 41. A program is a/an___ entity. Dormant Passive Hyperactive Active 42. Data warehouse supports___ OLTP OLAP ...
Initial queries from users are translated into a high-level database language such as SQL.Discuss this Question 6. The queries are translated into ___ expressions at the level of the file system, which are used there as well.Virtual Real Physical None...
Difference Between SQL and NoSQL Aggregate Functions (with Examples) in DBMS Nested Queries, Correlated Nested Queries and Set Comparison Operators in DBMS Functional Dependency and Attribute Closure in DBMS Closure set of attribute and irreducible set of functional dependency ...
when there is a high likelihood of accessing related records together, and when query performance is a critical consideration. It can be particularly useful in scenarios where data retrieval patterns are predictable or when there is a need for efficient data retrieval for specific queries or ...
Overall, these operations can be combined and nested to perform more complex queries and operations on databases. Relational algebra provides a formal and mathematical foundation for understanding and reasoning about the operations and properties of relational databases....
DBMS SQL Joins: In this tutorial, we will learn about the different types of joins with their examples (using SQL Queries).