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Naming Convention in SQL Rules to follow before specifying names(Object names, Column Names and Variable Names). Each name should begins alphabet Valid character set is a-z,A-Z,0-9,@,$,# and _ (underscore) Ex:  Emp123   Emp_o11 Names are not case sensitive Already existed names are not allowed Pre defined keywords (ReservedWords) are not allowed as names. Blankspace within a name is not allowed Max length of any name is 32 chars

What is sql in Deep(Structured query language) Oracle was the first company to release a product that used the English-based Structured Query Language, or SQL. This language allows end users to extract information themselves, without using a systems group for every little report. Oracle’s query language has structure, just as English or any other language has structure. It has rules of grammar and syntax, but they are basically the normal rules of careful English speech and can be readily understood. What is SQL QUERIES It is known as data base language. It is used to communicate with any database. We can use this language constructs to write SQL QUERIES. What is SQL* PLUS SQL * PLUS is a default client tool and acts as an interface between client and database. What is SQL It is a collection of pre defined commands and constructs with syntactical rules

There are two ways to include a file in c # include ”filename” #include<filename> 1st one  is search in  current directory  and  specify list of directory  and  it also take full qualified file name. 2nd one  is search in  specify list of director y. But It has a advantage that is it can take  multiple file Name  at a time that is separated by semicolon ( ; ). Example- #include<file 1; file 2; file 3>

How is the C language machine independent? first of all c is  machine dependent  language, means we can not run a c program on another machine except in which it is programmed. machine independent  means source code of language can execute on any machine. ex java. View More

Why are header files needed in C? Header file in any programming language used for including the library functions to that particular programming language. ex- stdio.h, conio.h, io.h and many more header files in c are used for including the library functions.