7/2/2015Murali Mani -- CS5421 Database Management Systems DB Application Development Project Statement + Introduction to Oracle

7/2/2015 Murali Mani -- CS5422 One project done in multiple steps Description: Envision a database application, and implement it fully. To be done individually or in teams of 2

7/2/2015 Murali Mani -- CS5423 Phases Project Intent: (due Sep 22, 6:00 pm) –Decide on your project. Send an to with (a) project title and a short one para description of your project, and (b) if working in a team, the names of the team members Phase I: (due Oct 20, 6:00 pm) –Represent the application requirements as an ER schema, translate the ER to relational, analyze the relational design using normalization theory, come up with SQL DDL statements and test them. Phase II: (due Nov 10, 6:00 pm) –Analyze the operations needed for your application, represent them in SQL DML. Phase III (due Dec 8, 6:00 pm) –Build an interface in a suitable PL for your DB application. Demo your project in class.

7/2/2015 Murali Mani -- CS5424 What DBMS to use? Oracle (available on ccc) –Accounts already created, Version –Documentation: –Oracle client (sqlplus), Version mySQL: Version (available on ccc) –To create an account, visit –Documentation:

7/2/2015 Murali Mani -- CS5425 How to set up Oracle From a CCC machine, check the type of shell that you are using. For this from your unix prompt, type echo $SHELL Most of you will get the result of the above as /bin/tcsh – this means you are using turbo c-shell From your shell prompt, type echo $PATH If the path is not empty, then set environment variables as in the next slide If the path is empty, then set environment variables as in the slide after the next

7/2/2015 Murali Mani -- CS5426 How to set up Oracle Add the following to your.cshrc – if your path is not empty setenv ORACLE_BASE /usr/local/oracle setenv ORACLE_HOME ${ORACLE_BASE}/product/11.1.0/db_1 setenv PATH ${PATH}:${ORACLE_HOME}/bin setenv ORACLE_SID WPIDBR2 setenv TWO_TASK ${ORACLE_SID}

7/2/2015 Murali Mani -- CS5427 How to set up Oracle (contd…) Add the following to your.cshrc – if your path is empty setenv PATH. setenv ORACLE_BASE /usr/local/oracle setenv ORACLE_HOME ${ORACLE_BASE}/product/11.1.0/db_1 setenv PATH ${PATH}:${ORACLE_HOME}/bin setenv ORACLE_SID WPIDBR2 setenv TWO_TASK ${ORACLE_SID}

7/2/2015 Murali Mani -- CS5428 Problem while setting up Oracle Important – Set up Oracle immediately and see that it is working Most of you will run into problems, also most of these problems will be simple typos However, feel free to approach the instructor if such issues.

7/2/2015 Murali Mani -- CS5429 Oracle introduction Connecting –sqlplus / –For example, sqlplus mmani/mmani –Change passwd using password command –Remember that you might finally end up submitting your passwd; therefore do not use a password that you use for other purposes.

7/2/2015 Murali Mani -- CS54210 SQLPLUS useful commands SELECT * FROM cat; -- lists tables you have created SELECT table_name FROM user_tables -- same as above. DESCRIBE ; -- describes the schema for the table with name tableName help index; -- shows list of help topics; help start; -- illustrates how to use command start exit; -- exit from the SQL shell More info:

7/2/2015 Murali Mani -- CS54211 Using Oracle from Windows Multiple ways –Use aquastudio software from aquafold.com (NOT FREE) –Use DreamCoder for Oracle 4.2 (FREE !!). Connect as: server: oracle.wpi.edu port: 1521 (this is the default) SID: WPIDBR2 –Download sqlplus client for windows. Connect using: sqlplus

7/2/2015 Murali Mani -- CS54212 MySQL introduction Connecting –mysql -h -u - p Useful commands –show tables; –describe ; –exit; –Look at manual for changing passwords and other commands.

7/2/2015 Murali Mani -- CS54213 Testing that you are set CREATE TABLE student (sNumber INTEGER, sName VARCHAR (30)); -- creates table student with two columns INSERT INTO student VALUES (1, ‘Joe’); -- insert one row into the student table SELECT * FROM student; -- select all rows from student table DELETE FROM student; -- delete all rows in the student table DROP TABLE student; -- drop student table Purge recyclebin; -- purge recyclebin tables that get created.

7/2/2015 Murali Mani -- CS54214 Running scripts in SQLPlus To enter the OS environment, use the following sqlplus command host Now you can execute OS commands, like cd.. type exit to exit Create a file in your file system in the current directory called createTable.sql -- executes the script –start createTable -- also execute the script If you want to save your output to a file (similar to script in Unix) –spool – –spool off;

7/2/2015 Murali Mani -- CS54215 Loading data from a text file CREATE TABLE myTable1 (a int, b int); Create data file, say: sample.dat 1,11 2,22 3,33 4,44

7/2/2015 Murali Mani -- CS54216 Loading from text file (Contd) Create control file, say load.ctl LOAD DATA INFILE sample.dat INTO TABLE myTable1 FIELDS TERMINATED BY ‘,’ (a,b) Invoke the SQL Loader (from your UNIX shell) –$ sqlldr control=load.ctl

7/2/2015 Murali Mani -- CS54217 Datatypes in SQL INT (or) INTEGER FLOAT (or) REAL DECIMAL (n, m) CHAR (n) VARCHAR (n) DATE, TIME