1. SQL Application University of Central Florida Summer 2002 EEL4781 Prof. Zalewski By Karl-H Pierre-Louis Hector Navarro

2. SQL Application: Outline 1) Introduction SQL … what is it? SQL … what can it be used for? 2) Problem Description 3) Design Solution 4) Example 5) Conclusion

3. SQL Application: Introduction SQL is a recognized standard language designed to organize, access and protect valuable data. It can be used to read from and write to databases.

4. Essentially, our project was designed to use the SQL language to create tables, insert data into them, and retrieve queried information from it. SQL Application: Problem Description

5. SQL Application: Design Solution Local computer design solution: In order to apply the SQL language we have created a series of SQL scripts that will create the tables and insert data into them locally.

6. SQL Application: Design Solution In a network environment, the process becomes a bit more involved. The complication does not arise due to the SQL language. In fact it arises when one has to connect from a client to a distant server that contains the tables… but ODBC and/or JDBC practically takes care of that.

7. REM 1.Uses a variable "product_id" to look up product information. select * from Products where PRICEPERU< '&price_less_than' / SQL Application: Example PRODUCTNAME PRICEPERU --------------- ---------- TESTERS 10.99 WIRES 12.5 TOOLS 20.2 CABLE 22.75 CONNECTORS 30 RACKS 195 CABINETS 300.5 7 rows selected. Customers in FL --------------- 3 select count(CUSTOMERID) as "Customers in FL" from customers where upper(CUSTOMERSTATE) = 'FL';

8. SQL Application: Example 1. Create a system data source. 3. Once the connection has been established, SQL commands can be performed. 2. Once created, a connection to it from another computer can be established.

9. SQL Application: Conclusion SQL is a useful language that transcends platforms. In other words, it is a non-platform specific language that can be utilized in all or most systems. Most of all, it lends itself to the efficient use of database information. Thanks.