Replicate Data Changes
Now you are going to simulate a transaction to the source database by updating the sport_type table. The Database Migration Service will automatically detect and replicate these changes to the target database.
For Oracle Source:
Expand this if your source DB type is Oracle
On the EC2 instance you RDP-ed into, use Oracle SQL Developer connect to the source Oracle RDS.
Open a New Query window and execute the following statement to insert 5 new sports into the sport_type table:
INSERT ALL
INTO dms_sample.sport_type (name,description) VALUES ('hockey', 'A sport in which two teams play against each other by trying to more a puck into the opponents goal using a hockey stick')
INTO dms_sample.sport_type (name,description) VALUES ('basketball', 'A sport in which two teams of five players each that oppose one another shoot a basketball through the defenders hoop')
INTO dms_sample.sport_type (name,description) VALUES ('soccer','A sport played with a spherical ball between two teams of eleven players')
INTO dms_sample.sport_type (name,description) VALUES ('volleyball','two teams of six players are separated by a net and each team tries to score by grounding a ball on the others court')
INTO dms_sample.sport_type (name,description) VALUES ('cricket','A bat-and-ball game between two teams of eleven players on a field with a wicket at each end')
SELECT * FROM dual;
COMMIT;
SELECT * FROM dms_sample.sport_type;

Expand this if your source DB type is Microsoft SQL Server
For SQL Server Source:
Use Microsoft SQL Server Management Studio to connect to the Source SQL Server on the EC2 instance.
Open a New Query window and execute the following statement to insert 5 new sports into the sport_type table:
USE [dms_sample]
GO
INSERT INTO [dbo].[sport_type]
([name]
,[description])
VALUES
('hockey', 'A sport in which two teams play against each other by trying to more a puck into the opponents goal using a hockey stick');
INSERT INTO [dbo].[sport_type]
([name]
,[description])
VALUES
('basketball', 'A sport in which two teams of five players each that oppose one another shoot a basketball through the defenders hoop');
INSERT INTO [dbo].[sport_type]
([name]
,[description])
VALUES
('soccer','A sport played with a spherical ball between two teams of eleven players');
INSERT INTO [dbo].[sport_type]
([name]
,[description])
VALUES
('volleyball','two teams of six players are separated by a net and each team tries to score by grounding a ball on the others court');
INSERT INTO [dbo].[sport_type]
([name]
,[description])
VALUES
('cricket','A bat-and-ball game between two teams of eleven players on a field with a wicket at each end');
GO

Repeat steps from prior screen that selected the contents of sport_type table in the target database.
The new records for that you added for basketball, cricket, hockey, soccer, volleyball to the sports_type table in the source database have been replicated to your dms_sample database. You can further investigate the number of inserts, deletes, updates, and DDLs by viewing the Table statistics of your Database migration tasks in AWS console.