example -alter table emp modify empno number
Example -ALTER TABLE emp MODIFY (empno NUMBER (7));
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column constraints not null unique check primary key default referenceson delete cascade using this key whenever a
create table prodtranspno number 4ptype char 1 check ptype in irs qty number 5foreign key pno references product pno on delete cascade in the
alter table command this command is used for variation of existing structure of the table in the given situation when a new column is to be added to
ythetasininthetacosinthetathen find dydividedthetasolution ythetasininthetacosinthetaapplying uv rulethen dydividedtheta sininthetacosintheta
drop table commandwhen an existing object is not needed for further use it is always better to eliminate it from the database to remove the existing
as spring approaches your design rm has been tasked with designing a two-lane highway in rural wyoming the highway descends a hill crosses a river
data manipulation languagedata manipulation language dml describes a set of commands that are used to query and change data within existing schema
select statementthis statement is used for retrieving information from the databases it can be coupled with many clauses let us talk about these
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