Over 200. As with other open source projects, of course, we depend on hundreds of community members for documentation, translations, advocacy, conferences, website development, infrastructure, and peer-to-peer support.
What are the four Oracle system processes that must always be up and running for the database to be useable?
What is the job of the information stored in data-dictionary?
Are the resulting relations of PRODUCT and JOIN operation the same?
How do you communicate with an RDBMS?
Which part of the RDBMS takes care of the data dictionary? How?
What are the primitive operations common to all record management systems?
What are the unary operations in Relational Algebra?
What do you mean by Correlated subquery?
What are database files, control files and log files. How many of these files should a database have at least? Why?
Name the sub-systems of a RDBMS?
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