Sequence

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Generate Unique Sequential values

    Sequence has 2 pseudocolumns

    1. CURRVAL

    2. NEXTVAL


CURRVAL :  gives the most recently generated value

NEXTVAL : gives the next available value in the sequence to generate

sequence will start generating value from its MINVALUE

Default MINVALUE is 1

default incremental value of sequence is +1

Same sequence can be used in multiple tables but not suggestable. One sequence for one table.

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