DBMS

Database-management-system Tutorial .

DBMS GATE Questions 2019

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In this article, you will get DBMS GATE Questions 2019 with answers. 1. Which one of the following statements is NOT correct about the B+ tree data structure used for creating an index of a relational database table? a. Each leaf node has a pointer to the next leaf nodeb. Non-leaf nodes have pointers to data recordsc. … Read more

DBMS GATE Questions 2020

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In this article you will get DBMS GATE Questions 2020 with answers. 1. Consider a relational database containing the following schema. The primary key of each table is indicated by underlying the constituent fields. SELECT s.sno, s.snameFROM Suppliers s, Catalogue cWHERE s.sno = c.sno ANDCost > (SELECT AVG (cost)FROM CatalogueWHERE pno = ‘P4’GROUP BY pno); The … Read more

What is Deadlock in DBMS and OS

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A deadlock in DBMS and OS is a condition wherein two or more processes or transactions are waiting for each other in order to be finished but none of the processes or transactions are willing to give up the resources that the other processes need. In this situation, no processes ever get finished and are in the … Read more

What are the different Oracle versions?

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oracleversions

Introduction: Oracle is a  Relational Database Management System (RDBMS) available in various versions. In this article I am going to tell you various Oracle versions and features. Oracle RDBMS is providing all the features to perform online transaction processing and data where housing. Every new oracle version comes with new features. Any software is not … Read more