If it sounds too good to be true... I bought two 128 Gb usb sticks from ebay for $12 each. Typical prices are $60 and over PER drive. Obviou...
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Mongo DB
Mongo DB is a document oriented database , It falls under the NoSQL Database. It is an open source product and developed by 10gen Company ...
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NoSQL Language
Meaning of NoSQL is “ Not only SQL ”. Database management system has RDBMS – Relational Database Management System OLAP – Online Analytica...
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DROP STATEMENT
Drop moves a table to recycle bin, it remove the table and all data entries . If the purge clause is used with drop statement invalidates ...
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PSEUDO COLUMNS
Pseudo is a value that is defined automatically by oracle for every table. It will not appear in the result of DESC Command and not stored ...
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DESCRIBE COMMAND
Oracle server stores information about all table in special set of relation table called data dictionary . Data dictionary is similar to a r...
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