The document provides a guide for implementing slowly changing dimensions (SCD) type 1 in a database using Oracle and Pentaho Spoon. It includes SQL commands for creating student and employee tables, inserting records, and updating data to reflect changes. Additionally, it offers instructions for connecting tables using Pentaho Spoon and executing transformations.

1. Unit 2 Slowly Changing Dimension – SCD type 1 (Insert)
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2. create table student_scd1(sid number(5) not null,sname varchar2(15),mark1 number(5),result varchar2(10),grade
varchar2(3));
insert into student_scd1 values(11,'Ambu',89,'Pass','A');
insert into student_scd1 values(12,'Meenu',75,'Pass','B');
insert into student_scd1 values(13,'Jasica',45,‘Fail',‘D');
select * from student_scd1;
create table student_dim_scd1(dim_sid number(5) not null, sname varchar2(15),mark1 number(5),result
varchar2(10),grade varchar2(3));
insert into student_dim_scd1 values(11,'Ambu',89,'Pass','A');
insert into student_dim_scd1 values(12,'Meenu',75,'Pass','B');
insert into student_dim_scd1 values(13,'Jasica',45,'Fail','D');
select * from student_dim_scd1;
update student_scd1 set mark1=60,grade='C',Result='Pass' where sid=13;
select * from student_scd1; Dr. Girija Narasimhan 2

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5. Drag and place the
table input
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6. Right click the mouse in
Table input and select Edit
step
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7. Select “New” get Database
connection details
Computer name in the
property of the system
Click the “Test” Button
Database name is “xe”, Database user
name “hr” and password of the user “hr”
13
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5
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9. Preview Data
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23. Exercise:
create table employ1(eid number(5) not null,ename varchar2(15),salary number(5));
insert into employ1 values(1001,'Alaa',1800)
insert into employ1 values(12,‘Ravi',1500);
select * from employ1;
create table emp_dim_scd1(dim_eid number(5) not null, ename varchar2(15),salary number(5));
insert into emp_dim_scd1 values(1001,'Alaa',1800)
insert into emp_dim_scd1 values(12,‘Ravi',1500);
select * from emp_dim_scd1;
Instruction :
• Create employ1, emp_dim_scd1 table in oracle_xe.
• Using Spoon, include “table input” connect employ1 table,
• “insert/update” tag include emp_dim_scd1 dimension table, run the transformation and execute the result
• Insert into employ1(13,’Rajaa’,2400); record in the employ1 table, again execute the result in spoon
• Display emp_dim_scd1 dimension table newly inserted row details are included.Dr. Girija Narasimhan 23