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Databases Interview Questions
Questions Answers Views Company eMail

Can somebody helps me to arrange these into ascending order depending on their sizes: 1)OLTP 2)ODS 3)DWH 4)DATA MART

Wipro,

2 6074

What is the maximum number of triggers,can apply to a single table?

2 8958

What packages(if any) has oracle provided for use by developers?

1 5882

What's dateware house and what's clustor with practicle example

2233

what's query optimization and without use of IN AND Exist can we get another way data from query

2197

What is tablespace in oracle? how can we create? how is it manage? . . . Thnx 2 All in Advnc....:)

3 5378

Simple example for difference between select and cursor in sql

1 4669

can we drop dual table

Metric Stream,

7 16452

25.67,-1 Trunc = 20 Round= 30 HOW????

Karrox,

2 7821

I want to make a query where I want to eliminate the duplicate rows from the table. For example : Input : Table : NAME Column1 Column2 India USA USA India UK India India UK The desired output that I want to eliminate the duplicates Output India USA UK India Thanks

Sun Life,

2 5334

i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id.

Oracle,

2 6306

trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output trans_id trans_date trans_amt debit_credit_indicator 001 JAN 1599 cr no.of trans 2 i want trans_id and trans_date like 'JAN' or 'FEB' etc, trans_amt i want all credit amount - debit amount per each trans_id. and debit_credit_indicator and no.of transactions in a month.

Oracle,

1 5443

I Have A Table Like This. Cityno Cityname Mails 1 Bangalore 8km 2 Hsr Layout 20km 3 Mejistic 30km 4 Jayadeva 55km 5 Itpl 80km 6 Hebbal 115km I Have Data Like This I Want O/p Like This Distance No.ofcity 0-50km 3 51-100km 2 101-150km 4 And So On

DELL, HCL, Oracle,

6 13498

i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id. pls give me answer. i want urgent

3 6229

i have a table like this. cityno cityname mails 1 BANGALORE 8KM 2 HSR LAYOUT 20KM 3 MEJISTIC 30KM 4 JAYADEVA 55KM 5 ITPL 80KM 6 HEBBAL 115KM I HAVE DATA LIKE THIS I WANT O/P LIKE THIS DISTANCE NO.OFCITY 0-50KM 3 51-100KM 2 101-150KM 4 AND SO ON pls give me answer. i want urgent

6 8824


Un-Answered Questions { Databases }

Define database.

1049


did u received a single file or multiple files

2059


What is table scan and index scan?

1162


What is rank () in sql?

997


Create and insert into temp table in sql server?

1082


What operator tests column for the absence of data?

636


how to delete duplicate rows from a join tables(I have three tables on that join) how do you know which join is need to be used? The select statement I have is: SELECT gc_skill_type.skill_type, gc_area_tec.area, gc_technology.technology, gc_technology.id_technology, gc_area_tec.id_area_tec FROM gc_skill_type, gc_area_tec, gc_technology WHERE gc_area_tec.id_skill_type (+) = gc_skill_type.id_skill_type AND gc_technology.id_area_tec (+) = gc_area_tec.id_area_tec order by gc_skill_type.skill_type asc, gc_area_tec.area asc, gc_technology.technology asc

4090


What do you understand by the data quality services in sql server?

981


How many servers can we create in a single subscription?

162


What is schema in teaching?

879


which types of join is used in sql widely? : Sql dba

1030


Is mongodb better than mysql?

1


How the authentication mode can be changed?

1176


You have two tables with a one to many join based on a field named id. You need to find records in the parent table that are not represented in the child table. how would you accomplish this?

1111


What is the use of primary key?

1047