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INTRODUCTION SQL is a language that helps in modifying, locating and relocating from rows of tables made to collect all data. It can also search more than one table.
DEFINE SUBJECT All database don’t use same SQL syntax, some databases require different SQL syntaxes. SQL is user friendly language to directly fetch needed data; otherwise we would require some inherent mechanism to fetch such ordered data from memory.
If you have opened new business and don’t want bankruptcy, start making table oriented structure of employees, vendors, clients, seller’s etc.it uses normal vocabulary in the language itself to make it more users friendly. Words like DELETE, INSERT, and UPDATE are commonly used in this language.Every column is called field and contains similar things about one particular thing like lot of names, many number of heights, numeric etc. Similarly every row contains all information about one person or thing.
SOME SQL COMMANDS Insert joins views, group function, and select statement, update statement, delete statement and subquery clauses. Delete statement helps delete a row from the table. Update statement helps to modify given row. Insert statement is used to place new data in the table. A View is virtual table through which data of one or more table can be seen. Although it is not a real tool, it is still great since it helps SQL Modify objects.
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