Basic DBMS Interview Questions and Answers -1
Introduction:
DBMS stands for Database Management System and refers to the technology for creating and managing databases. A basic quiz on the database is provided, with DBMS questions and answers. We offer DBMS questions for both beginners and experts on our Nithra job site. The software used to manage databases is called a database management system. The database, which is used to efficiently access, insert, and remove data, is a collection of connected data. The data may also be arranged using tables, schemas, views, reports, etc.
1. What is the full form of DBMS? Database Management System
2. What normalization form is based on the transitive dependency? 3NF
3. What is a database? Organized collection of data or information that can be accessed, updated, and managed
4. Which language does the majority of DBMSs employ to facilitate data access for their users? Query language
5. What do the rectangles in the ER diagram mean? Entity sets
6. How many levels are there in the database architecture? 3
7. Records are organized in a hierarchical model____. Tree-like structure
8. Who was the original DBMS creator? Charles Bachman
9. What SQL command is used to delete a relationship? Drop
10. A relational database is made up of a number of.Collection of Tables that store interrelated data.
11. Which is required for the operation of the database management system? a high speed, and large-capacity disk
12. DBMS acts as an interface between what two components of an enterprise-class database system? Database application and the database
13. The ability to query data, as well as insert, delete, and alter tuples, is offered by ____________. DML (Data Manipulation Language)
14. ______________ is a set of one or more attributes taken collectively to uniquely identify a record. Super key
15. A database that supports data distributed across several different sites is called a(n)____ database.Distributed
16. Which normal form deals with multivalued dependency? Fourth Normal Form (4NF)
17. What is the name of the query that is placed within a WHERE or HAVING clause of another query? Subquery
18. _________________ operations do not preserve non-matched tuples. Inner join
19. What is a record in a database called? Tuple
20. The modify operation is likely to be done after. look-up operation
21. What is the number of tuples of a relation known as? Cardinality
22. How many maximum children can a binary tree have? Two children
23. What is a table joined with itself called? Self join
24. The minimal set of super key is called. Candidate key
25. A type of query that is placed within a WHERE or HAVING clause of another query is called. Sub query
Conclusion:
Database management systems (DBMS) are important to software development. Every industry that employs software, from smaller businesses to higher-level companies, must have a DBMS for data management, which can only be used by someone who is well familiar with DBMS. Thus, those with greater DBMS expertise have numerous opportunities.
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