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What is a SELECT operation?
The select operation selects tuples that please a given predicate. We use the lowercase letter σ to denote selection.
What are the authentication modes in SQL Server? How can it be changed? Windows mode and Mixed Mode - SQL and Windows. To alter authentication mode in SQL Server click Start, P
The data of a view is not physically stored, but derived from one or more tables. True the data of a view is not physically stored
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Have a look around the site, and at some of the sites they have featured. These are all examples of bad design, and also offer an explanation about why they fall into this category
find the name of supplier who supply some red part
Control Files : The redo and control files logs support the rest of the architecture. Every database must have at least one control file, although you have more than one to guard
Scenario 1: Power goes out after the first instruction. What happens?
coventions for displaying an ER schema as ER diagram
Can a domain, assigned to a data element be changed? Yes. We can do so by just overwriting the entry in the field domain.
describe all the tables you have created. ?get table_name, status, num_rows, user_stats in user_tables system view ?get table_name, constraint_name, constraint_type in user_constr
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