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

Oracle General Interview Questions

Questions Answers Views Company eMail

Suppose U install the oracle DB either enterprise edition or express edition in ur personal PC, Is there the Database has been created after ur installation if not then where the oracle's all objects with data be stored?

IBM,

1 3883

emp numb is unique because that is primary key,,but what is foreign key .. explain very clear with example

1 3296

I have table-A(1,2,3)& table-B(3,4,5).what is the different b/w below questions? A union all B? B union all A?

Zensar,

2 5369

I have table-A(1,2,3,4,4,5,6,6,6,7). how to get all duplicate values?what is sql query?

Zensar,

5 8397

Please explain me all types of Data models. Also give me the details if each model can have other name.for example:schematic data model is also known as conceptual data model and entity relation data model.

2263

how to find count rows in table without count function?

Oracle,

3 6866

i have executed the Delete command after the I have created table whether deletions will be commit or not? if table is successfully created?

Oracle,

5 7576

Q) How to Find Max Date from each Group? (Asked in Infosys (INFI)Interview)

Infosys,

4 8249

is database gud carrier option??

1 3528

can anyody please send me the dump for Oracle 10g certifications for DBA path?

2091

how to retrive xml data for using sql query?

IBM, TCS,

3 6884

1. How actually index will work ? 2. Why do people prefer mostly bitmap index and btree index in datawarehouse ? 3. If I use the column in aggrigate functions like max,min,count and avg and if I have a index created on that column, will it increases the performance ?

IBM,

1 4579

nw i'm doing MBA system and planning to do oracle,database management.tell me that whether it is useful r not?.refer any course for my carrier pls

2151

Without giving condition how to retrieve the unmatched records from table.

TCS,

1 4893

In not less than 100 words what's the main difference between Rolap and Molap in ORACLE ?

2214

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Un-Answered Questions { Oracle General }

What is an oracle wallet?

883

Explain the difference between sap and oracle?

980

Is truncate autocommit in oracle?

1029

What happens in oracle commit?

973

How to convert times to characters in oracle?

982

What is an oracle transaction?

1058

How to return top 5 rows in oracle?

994

How will you differentiate between varchar & varchar2?

995

How to define a data source name (dsn) in odbc manager?

969

How to use an explicit cursor without open statements?

1016

How to update a table row with a record?

966

What are the advantages of oracle?

965

Explain do view contain data?

943

How to define a procedure inside another procedure?

967

What are the differences between interval year to month and interval day to second?

970

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