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How is the database organised in Oracle?
Database organized within Oracle in terms of table and table holds attributes and values.
A database consists of one or more logical units known as table spaces. Each table space within turn, consists of one or more physical structures known as data files. These might be either, files managed through the operating system or raw devices.
Oracle database consists of subsequent table spaces.
(i) System (ii) Table spaces to store user data (iii) Temporary table spaces.
The space in table space is separated into units, called segments, that each contains data for a specific data structure. These are four kinds of segments:
(i) Data segments (ii) Index segments (iii) Temporary segments (iv) Rollback segments
What are audit trails? An audit trail is a log of all alters to the database along with information like which user performed the change and when the alter was performed.
What is meant by functional dependencies? Consider a relation schema R and α C R and β C R. The functional dependency α ->β holds on relational schema R if in any legal relati
Explain Alternate key? Alternate Key - All the candidate keys except primary key are known as alternate keys.
what do you mean by consistency in rdbms?
About Attribute inheritance
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