Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)

Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)

Neo4j (82)
InfluxDB (0)
Apache CouchDB (44)
Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

How internally data stores in MyISAM and INNODB table types?

Zensar,

2746

why not null constraint showing its constraint type as 'c'

1 4655

how can get like this result table A col1 col2 --- ----- a A b B C C .. .. .. ... .. ... wants result like for a single column col1 ------ a,b,c,........n of data and another is col1 ------- A B C D ........ a b b d ........

TCS,

2 5062

without using count(*) and rownum how can we count total record in a table

AC, HP,

5 10190

What is the basic difference between a sql and stored procedure ?

L&T,

2 6834

Which is the best place to learn hadoop?

1 5314

write sub query for eliminating duplicate rows using analytical function?

Metric Stream,

3 13014

what is switch column,colums cost in oracle?

Metric Stream,

3680

what are the tunnig tables you used for tuning a query and tell me some of coloumns in that tuning tables?

Metric Stream,

1 9319

maximum database size of mysql database

2 5388

we have a package and we have grants to execute that package inside of that we have table, here we don't have privileges to this table? whether this package will execute or not?

TCS,

3 8886

you are sorting a table using "order by"(descending) clause of a column which contains a null value...whether that row containing null value will come first or last in the output??

BirlaSoft,

2 5860

display records from 5 to 9 using rowid or rownum

Agile Software,

5 16060

when i declare date data type in sql ,i inserted the date 22-10-2012,but my result is in different date 1894-07-11 any one pls help me what's wrong in my query Create table orders(od_id int,od_name varchar(10),od_date date) insert into orders values(1,'sai',22-10-2012) and any one pls suggest what i can learn for 3 years real time experenice in sql because i am looking for database field

1 3286

determine the minimum salary of the employee and his details who join on the same date

3 6120

Un-Answered Questions { Databases }

What program will open a mdb file?

969

What is full join in sql?

999

How many null values we can have in a unique key field in sql server?

961

What are the syntax and use of the coalesce function?

1209

What is the difference between 3 tier and 3 layer architecture?

804

What do you know by pl/sql cursors?

1109

how to write the sub-queries in odi?

706

What is the data type of dual table?

997

Is mongodb relational database?

What are the types of joins?

1092

what are all the different types of indexes? : Sql dba

1051

What is acid db?

892

What is difference between schema and table?

925

How real and float literal values are rounded?

1159

what is oracle database ? : Sql dba

1035

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