How to invoke the data pump export utility?
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what is the difference between rollback & commit? can a foreign key has null value?
Explain the function of optimizer in oracle?
What is the use of Redo Log Information ?
Define the terms primary key foreign key and also the difference between primary and the unique key
What is define in oracle?
What is dynamic proxy?
WHAT IS THE DIFFERENCE BETWEEN PRIMARY KEY(PK) CONSTRAINT AND UNIQUE KEY(UK) + NOT NULL(NN) CONSTRAINT ASSIGN TO A COLUMN ? INSTEAD OF ASSIGNING PK ,WE CAN ASSIGN UK + NN TO A COLUMN. WHAT ARE THE MARRITS AND DEMARITS BETWEEN THE ABOVE TWO?THE ABOVE TWO ARE SAME,THEY DON'T ALLOW DUPLICATE AS WELL AS NULL VALUES.
What privilege is needed for a user to insert rows to tables in another schema?
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.
What do database buffers contain?
In which dictionary table or view would you look to determine at which time a snapshot or MVIEW last successfully refreshed?
How can windows applications connect to oracle servers?