DATA BASE (DAY 1) BASIC(ENTITY,RECORD , FIELD, QUERY, INSERT )

                                                  **DATABASE**

      

 1)  DATABSE IS A COLLECTION OF ENTITY.

 2)  WHAT IS ENTITY ?

  = ENTITY IS A COLLECTION OF FIELD AND RECORD.

 3)WHAT IS FIELD ?

 = FIELD IS A REPRENTING OF RECORD.

*SINGLE VALUE FIELD [ROLL,ID,UNIQUE]

* MULTI VALUE FIELD[FIRST NAME ,SECOND NAME,SIRNAME]     

* NULL FIELD [MOBILE , BLOOD GROUP EX BLANK]

  

 * DATABASE TOOLS

  1)SQL SERVER

  2) MS ACCESS

  3) EXCEL

  4) XML


 * DATABASE QUERY

  * DATABASE IS A SET OF INSTROCTION SETUP IN A DATABASE.


 * INSERT QUERY

   *TWO TYPES OF QUERY

     1) ALL COLOUM =INSERT INTO STUDENT(tablename)VALUES(10,'MOHAN','NAGPUR')

     2) PERTICULAR COLOUM=INSERT INTO STUDENT(tablename)VALUES('NAME','CITY')VALUES('RAM','NAGPUR')


   * DATABSE CLOSES

      1)WHERE CLOSE 

      2) BETWEEN CLOSE

      3) GROUP BY

      4)ORDER BY

      5)LIKE

      6)IN CLOSE

      

       *SELECT QUERY IS ALWAYS USE DISPLAY THE RECORD.

       1) ALL RECORD SHOW = SELECT * FROM STUDENT;

      2) ONLY NAME = SELECT NAME FROM STUDENT ;

      3)ROLL NO CHECK AND OTHER = SELECT * FROM STUDENT WHERE  ROLL=101;

      4) GREATER>THAN = SELECT * FROM STUDENT WHERE AGE>100;

      5) DELETE NAME AND OTHER = DELETE FROM STUDENT WHERE ROLL=101;

      6)  UPDATE =UPDATE STUDENT SET NAME='RAM' WHERE ROLL=101;

      7) REPEATED DATA IN SINGLE TIME=SELECT CITY FROM STUDENT GROUP BY CITY;

    

       (ROLL INT , NAME VARCHAR , CITY VARCHAR , AGE INT , GENDER VAARCHAR);

         

ASSIGMENT ;- ADD 10 RECORD AND 10 QUERY.
(ROLL,NAME,CITY,AGE,GENDER)




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