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 3965

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

1 3389

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 5466

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 8580

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.

2310

how to find count rows in table without count function?

Oracle,

3 7007

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 7792

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

Infosys,

4 8435

is database gud carrier option??

1 3595

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

2121

how to retrive xml data for using sql query?

IBM, TCS,

3 7005

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 4680

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

2208

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

TCS,

1 4963

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

2286

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Un-Answered Questions { Oracle General }

What is oracle latest version?

1095

Provide an example of a shell script which logs into SQLPLUS as SYS, determines the current date, changes the date format to include minutes & seconds, issues a drop table command, displays the date again, and finally exits.

2123

What is Reduced List of Values?

2164

Explain integrity constraint?

1161

What do you mean by a tablespace?

1039

I just want to maintain data like an employee can belongs to 3 or more departments . We can resolve this by using composite key but it avoids normalization rules. So Can anyone tell me how can I maintain data.

2182

What is where clause in oracle?

1026

How do I escape a reserved word in oracle?

1197

How many file formats are supported to export data?

1220

What would you do with an in-doubt distributed transaction?

1978

How to delete a column in an existing table in oracle?

1071

What is java oracle used for?

1020

How to pass a parameter to a cursor in oracle?

1178

What is a parameter file in oracle?

1134

Explain the use of log option in exp command.

1120

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