What is flashback in Oracle?
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Explain temporal data types in oracle
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.
How to calculate date and time differences in oracle?
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.
Explain the features of oracle?
How to make a Data Backup in oracle ? What is the procedure for creating the dump files in oracle ( any version ) ?
How to create a server parameter file?
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?
How to define an external table with a text file?
Is it possible to enter only time value into a column of a table in sql?
How many memory layers are in the oracle shared pool?
Explain an exception and its types?
Oracle General 
