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SQL QUERY HANDLING
Basic SQL Commands
 SELECT: Specifies columns
 FROM: Identifies tables or views
 WHERE: Specifies conditions
Querying Databases: Elements of
SQL
Results of SELECT Statement
THE DATABASE APPROACH TO DATA MANAGEMENT
THE DATABASE APPROACH TO DATA MANAGEMENT
Results of Conditional Selection
137
150
Door latch
Door seal
22.50
6.00
C
WHAT IS A SQL FORM?
 A SQL Form serves the same purpose as a paper
form.
 Instead of being printed on paper it is drawn out by
the computer on the terminal screen and the form is
used to pass information to and from the computer
database.
 The user types in the data to be stored or,
alternatively, the computer fills in sections of the form
with information requested by the user.
 Just like a paper form, a SQL Form will have a space
for each item of data which is to be entered or
displayed.
 Within a SQL Form each of these spaces is referred
6 sql query handling

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6 sql query handling

  • 2. Basic SQL Commands  SELECT: Specifies columns  FROM: Identifies tables or views  WHERE: Specifies conditions Querying Databases: Elements of SQL
  • 3. Results of SELECT Statement THE DATABASE APPROACH TO DATA MANAGEMENT
  • 4. THE DATABASE APPROACH TO DATA MANAGEMENT Results of Conditional Selection 137 150 Door latch Door seal 22.50 6.00 C
  • 5. WHAT IS A SQL FORM?  A SQL Form serves the same purpose as a paper form.  Instead of being printed on paper it is drawn out by the computer on the terminal screen and the form is used to pass information to and from the computer database.  The user types in the data to be stored or, alternatively, the computer fills in sections of the form with information requested by the user.  Just like a paper form, a SQL Form will have a space for each item of data which is to be entered or displayed.  Within a SQL Form each of these spaces is referred