Oracle is one of the underlying principles of relational database is the separation and independence of the the logical and physical data models. This provides enormous flexibility and means you can change change either one without affecting the other.
A relational database can be regarded as a set of 2-dimensional tables which are known as "relations" in relational database theory. Each table has rows ("tuples") and columns ("domains"). The relationships between the tables is defined by one table having a column with the same meaning (but not necessarily the same name or value) as a column in another table.
The solution to this was relational databases which are based on the concept of normalisation - the separation of the logical and physical representation of data.
OBIEE trainer will mostly concentrate on real time issues rather than simply teaching you the OBIEE course. This will help you when you join the job and while attending interviews.
OBIEE online trainer will give you all possible interview questions with answers and take a preliminary interview to build your confidence. This will help you how to answer in the interview.
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