Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Multiple column Queries:
Syntax:
SELECT COLUMN1, COL2,......
FROM TABLE
WHERE (COLUMN1, COL2, ...) IN
(SELECT COLUMN1, COL2,....
WHERE );
Example: Find the department number, name, job title and salary of those people who have the similar job title and salary as those are in department 10.
SELECT DEPTNO,ENAME, JOB, SAL
FROM EMP
WHERE (JOB, SAL) IN ( SELECT JOB, SAL
WHERE DEPTNO=10);
OUTPUT:
DEPTNO
ENAME
JOB
SAL
10
Nirmal
MANAGER
2975
Kailash
ANALYST
3000
20
Ashwin
What is a recursive relationship? Give an example not used in the text. A recursive relationship is a relationship among an entity and itself. For example, given the entity PER
Three Level Architecture of DBMS or Logical DBMS Architecture The logical architecture defines how data in the database is perceived by users. It is not deals with how the da
difference between MIS and DSS
Benefits and Limitations od Data Models?
Compare the two log-based recovery schemes in terms of ease of implementation and overhead cost. Ans: There are two types of log based recovery techniques: deferred update
Multi-list file Organisation Multi-list file organisation is a multi-index linked file organisation. A linked file organisation is a logical organisation where physical orderin
A super key is an attribute or set of attributes used to recognize the records uniquely in a relation. For instance, in the Relation PERSON defines earlier PERSON_ID is a super
A well-maintained relational DBMS has a high level of data integrity. What features of a relational DBMS contribute towards this level of integrity? Relational DBMS gives high
Explain Data Dictionary in short?
Assignment #1 Data Management The questions on this exam are based on the Baxter Aviation case scenario. 1. (5 points) The systems analyst proposes the following two relationshi
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd