Lesson 2: Generating a database schema

This lesson assumes you have completed all preceding lessons. See Lesson 1: Setting up the consolidated database.

In this lesson, you generate a database schema, which includes a Dealer table, a non_sync_request table, a download_cursor synchronization script. This database schema satisfies the requirements for generating push requests.

Set up the database schema

Click Start » Programs » SQL Anywhere 12 » Administration Tools » Sybase Central.
Perform the following tasks to connect to the consolidated database:
1. Click Connections » Connect with SQL Anywhere 12.
2. From the Action dropdown list, choose Connect with an ODBC Data Source.
3. Click ODBC Data Source Name, and click Browse.
4. Select SIS_CarDealer_LP_DBLSN_CONDB and then click OK.
5. Click Connect.

Connect to your database using Interactive SQL.

You can start Interactive SQL from Sybase Central or at a command prompt.

To start Interactive SQL from Sybase Central, right-click the SIS_CarDealer_LP_DBLSN_CONDB - DBA database and click Open Interactive SQL.

To start Interactive SQL at a command prompt, run the following command:

dbisql -c "dsn=SIS_CarDealer_LP_DBLSN_CONDB"

Execute the following SQL statements to create and set up the Dealer and non_sync_request tables:

CREATE TABLE Dealer (
    name           VARCHAR(10) NOT NULL PRIMARY KEY,
    rating         VARCHAR(5),
    last_modified  TIMESTAMP DEFAULT TIMESTAMP
)

CREATE TABLE non_sync_request(
    poll_key       VARCHAR(128)
)

Insert data into the Dealer table using the following statements:

INSERT INTO Dealer(name, rating) VALUES ('Audi', 'a');
INSERT INTO Dealer(name, rating) VALUES ('Buick', 'b');
INSERT INTO Dealer(name, rating) VALUES ('Chrysler', 'c');
INSERT INTO Dealer(name, rating) VALUES ('Dodge', 'd');
INSERT INTO Dealer(name, rating) VALUES ('Eagle', 'e');
INSERT INTO Dealer(name, rating) VALUES ('Ford', 'f');
INSERT INTO Dealer(name, rating) VALUES ('Geo', 'g');
INSERT INTO Dealer(name, rating) VALUES ('Honda', 'h');
INSERT INTO Dealer(name, rating) VALUES ('Isuzu', 'I');
COMMIT;

Execute the following SQL statement to create the MobiLink system tables and stored procedures. Replace C:\Program Files\SQL Anywhere 12\ with the location of your SQL Anywhere 12 installation.
READ "C:\Program Files\SQL Anywhere 12\MobiLink\setup\syncsa.sql"

Run the following SQL script to specify a download_cursor synchronization script and record the synchronization state to the ml_sis_sync_state system table:

CALL ml_add_table_script(
    'CarDealer',
    'Dealer',
    'download_cursor',
    'SELECT * FROM Dealer WHERE last_modified >= ?'
);

CALL ml_add_connection_script(
    'CarDealer',
    'publication_nonblocking_download_ack',
    'CALL ml_set_sis_sync_state( 
        {ml s.remote_id},
        NULL,
        {ml s.publication_name},
        {ml s.username},
        NULL,
        {ml s.last_publication_download}
    )'
);

CALL ml_add_table_script(
    'CarDealer', 'Dealer', 'download_delete_cursor', '--{ml_ignore}'
);

COMMIT;

This script sets the ml_sis_sync_state to record download-only synchronization. Recording the synchronization state allows you to reference the ml_sis_sync_state system table from the request_cursor event. You specify the request_cursor event in the next lesson.

Close Interactive SQL.
Proceed to Lesson 3: Creating a MobiLink project.

Lesson 2: Generating a database schema

Set up the database schema

See also