1 RDO72 The Relational Database Operator (RDO) utility is an interactive interface to Oracle Rdb, a relational database management system. RDO lets you type Oracle Rdb statements interactively and see the results immediately. You can use RDO to: o Define and maintain your database o Learn about Oracle Rdb o Test and prototype Oracle Rdb applications o Perform small-scale data manipulation operations To run RDO, define a symbol and use that symbol to enter the utility. For example: $ RDO :== $RDO $ RDO RDO provides complete online HELP. 2 Release_Notes To see the current Release Notes for Oracle Rdb, type or print the following file: SYS$HELP:RDBvvu[n].RELEASE_NOTES where vv = version u = update n = subsequent update (optional) For example: SYS$HELP:RDB072.RELEASE_NOTES 2 Sample_Databases To help you learn and test Oracle Rdb features, online files are provided that you can execute to create the following sample databases: o personnel The personnel database is a single-file database. o mf_personnel The mf_personnel database is a multifile database. o corporate_data The corporate_data database is a single-file database that demonstrates the use of the multischema feature of SQL. The personnel and mf_personnel databases contain the same domains, tables, and columns. The corporate_data database contains slightly different domains, tables, and columns. You use a single command procedure provided by Oracle Rdb to create the various forms of the sample databases. By default, the command procedure builds the single-file personnel database using SQL data definitions. Use the following command to build this database: $ @RDM$DEMO:PERSONNEL You can specify parameters when you invoke the command procedure to create alternative versions of the sample databases. The following shows the format of the command you enter to create a sample database: $ @RDM$DEMO:PERSONNEL interface-lang database-form reposit multischema dir The parameters specify the following choices: 1. Interface-lang: Enter SQL or RDO. Specifies SQL or RDO as the data definition language. SQL is the default. There are slight differences between the SQL and the RDO definitions of personnel and mf_personnel. 2. Database-form: Enter S or M. Specifies the creation of either a single-file (S) or multifile (M) database. A single-file database is the default. 3. Reposit: Enter CDD or NOCDD. Specifies whether or not to store data definitions in the repository. The default is not to store data definitions in the repository. 4. Multischema: Enter MSDB or omit parameter. Specifies the creation of the multischema database, corporate_ data. Note that for the first three parameters you must specify the SQL interface, the single-file database form, and that data definitions not be stored in the repository. The following example demonstrates how to create the (corporate_ date) multischema database: $ @RDM$DEMO:PERSONNEL SQL S NOCDD MSDB 5. Dir: Enter a directory specification where you want the database created. If you do not specify this parameter, this procedure will prompt you for a directory specification. If you do not provide a directory specification at the prompt, your default directory will be used. If you run this procedure in batch and this parameter is empty, your default directory will be used. To specify the second, third, fourth, or fifth parameters, you must include any previous parameters. You can use uppercase or lowercase to specify the parameters. For example, to build the multifile version using RDO data definitions and store the data definitions in the repository, enter the following command: $ @RDM$DEMO:PERSONNEL RDO M CDD When you build the single-file personnel database, the command procedure builds a database called personnel.rdb, regardless of the interface language used. When you build the multifile mf_personnel database, the command procedure builds a database called mf_personnel.rdb (plus related storage area files), regardless of the interface language used. Note that you can use either the SQL or RDO interface to work with the resulting database, regardless of whether the database was created using SQL or RDO command files. When you build the multischema corporate_data database, the command procedure builds a database called corporate_data.rdb. You can use only SQL to build the database. Although you can use RDO to work with the database, RDO does not allow you to take advantage of the multischema feature. NOTE When you create the personnel or mf_personnel database, a log of the database definition statements used in creating the database is placed in a file called personnel.log in the same directory as the database. When you create the corporate_data database, a log of the database definition statements used in creating the database is placed in a file called corporate_data.log in the same directory as the database. The personnel command procedure consists of several smaller command files, executable files, and data files. These files are located in the directory RDM$DEMO. You might want to use these files as models in creating your databases. For additional information about creating the sample databases, read the online file about_sample_databases.txt. This file is located in the Samples directory. 2 Sample_Programs During installation, a number of sample programs are installed in a variety of programming languages in a Samples directory. On OpenVMS, these programs are located in the following Samples directory: SQL$SAMPLE A brief description of the sample programs can be found in the file about_sql_examples.txt in the Samples directory.