GemStone/S installation and use
GemStone/S is a scalable Object database system that supports highly reliable enterprise applications. The following is an introduction to the installation and use of GemStone/S, as well as sample code:
1. Install GemStone/S
-Firstly, download the installation program for GemStone/S from the official website of GemTalk Systems and select the appropriate version according to the requirements of the operating system.
-Run the installation program and follow the prompts to install.
-During the installation process, you need to select the directory where GemStone/S is installed and provide a database name and administrator password.
2. Start GemStone/S
-Find the script file to start GemStone/S in the installation directory and select the appropriate script based on the operating system.
-Run the startup script and provide an administrator password to start the GemStone/S server.
3. Create a data table
-Open the GemStone/S management tool, which can be the Command-line interface of GemStone/S or a graphical interface tool such as the GemStone/S Web browser.
-Log in using an administrator account.
-Create a data table using GemStone/S's Query language. The following is an example code:
class Person {
firstName: String;
lastName: String;
age: Integer;
}
-Run the above code to create a data table named Person.
4. Data insertion
-Insert data using GemStone/S's Query language or programming interface. The following is an example code:
var person := Person new.
person firstName: 'John'.
person lastName: 'Doe'.
person age: 30.
person commit.
-Run the above code to insert a record into the Person data table.
5. Data modification
-Use GemStone/S's Query language or programming interface to modify data. The following is an example code:
var person := Person fetchById: 1.
person age: 31.
person commit.
-Run the above code to modify the age of the record with ID 1 in the Person data table to 31.
6. Data Query
-Use GemStone/S's Query language or programming interface to query data. The following is an example code:
var persons := Person allInstances.
People do: [: each|
each printString display.
].
-Run the above code to query and display all records in the Person data table.
7. Data deletion
-Use GemStone/S's Query language or programming interface to delete data. The following is an example code:
var person := Person fetchById: 1.
person destroy.
-Run the above code to delete the record with ID 1 from the Person data table.
The above is an introduction to the installation and use of the GemStone/S database, as well as sample code for creating data tables, inserting, modifying, querying, and deleting data. You can further learn and use the database based on actual needs and GemStone/S documentation.
