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Consider the following relations:
BRANCH( bno, street, area, city, pcode, Tel_no, Fax_no) STAFF( Sno, Fname, Lname, address, position , salary, bno) Express the subsequent queries in SQL: (i) List the staff who work within the branch at ‘163 main street' (ii) Find out staff whose salary is larger than the salary of each member of staff at branch B3.
(i) Select Fname, Lname from STAFF, BRANCH where STAFF.bno = BRANCH.bno and street = ‘163 main street'(ii) Select Fname, Lname from STAFF where salary > ( select max (salary) from Staff where bno='B3'
Given the following relations TRAIN (NAME, START, DEST) TICKET (PNRNO., START, DEST, FARE) PASSENGER (NAME, ADDRESS, PNRNO.) Write SQL expressions for the following queries: No
Define the terms i) Entity type ii) Entity set Entity type: An entity type describes a collection of entities that have the similar attributes. Entity set: The set of all en
Normal 0 false false false EN-US X-NONE X-NONE
What are the advantages of embedded query language? Give an example of an embedded SQL query. Embedded query language - SQL could be implemented within two ways. It can be us
List and also explain the dissimilar stages of DDLC ?
What does Aggregation mean?
The Locking Protocol: To manage concurrency related problems we use locking. A lock is mainly a variable that is associated with a data item in the database. A lock can be located
What are the different approaches for database design? There are two basic approaches for database design which are as follows: Attribute driven: It compiles a list of att
What is meant by log-based recovery? The most widely used structures for recording database changes is the log. The log is a sequence of log records, recording all the update a
The Structured Query Language INTRODUCTION Database is an organised set of information about an entity having controlled redundancy and serves numerous applications. DBMS
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