Oracle10g is a version of the database management software Oracle launched in 2003. Oracle10g has made great improvements compared to the previous version, including security, self-management capabilities, high availability, performance, etc. This article will focus on the installation and usage tutorials of Oracle10g.
1. Oracle10g installation steps
Oracle10g needs to run on Windows XP/2003/Vista, Linux, Unix and other platforms. First, you need to confirm the compatibility of your system configuration and supported platform with Oracle10g.
Download Oracle10g from the Oracle official website http://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html file, decompress it, enter the decompression folder, and run setup.exe.
The Oracle10g installation program will automatically detect the system configuration and install according to the prompts. During the installation process, you need to enter the database name and password, and other options can be configured according to personal needs.
After the Oracle10g installation is completed, you can use the Oracle web version of the tools for database management.
2. Basic use of Oracle10g
Using Oracle10g requires connecting to the corresponding database. Enter sqlplus username/password@database name
in the command line to connect to the database, or you can use the tools provided by Oracle to connect.
In Oracle10g, you can use SQL commands to create database tables. For example, you can use the following command to create a student table:
CREATE TABLE student(
ID INT,
NAME VARCHAR(20),
AGE INT ,
GENDER VARCHAR(4)
);
After the command is successfully executed, you can use the following command to view all tables in the database:
SELECT * FROM USER_TABLES;
In Oracle10g, you can use the INSERT command to insert data into a database table. For example, you can use the following command to insert a piece of data into the student table:
INSERT INTO student(ID, NAME, AGE, GENDER) VALUES(1, 'Tom', 20, 'Male');
After the command is successfully executed, you can use the following command to query all data in the student table:
SELECT * FROM student;
In Oracle10g, you can use the UPDATE command to update data in the database table. For example, you can use the following command to change the age of the data with ID 1 in the student table to 22 years old:
UPDATE student SET AGE=22 WHERE ID=1;
After the command is executed successfully, You can use the following command to query the data with ID 1 in the student table:
SELECT * FROM student WHERE ID=1;
In In Oracle10g, you can use the DELETE command to delete data in the database table. For example, you can use the following command to delete the data with ID 1 in the student table:
DELETE FROM student WHERE ID=1;
After the command is executed successfully, you can use the following command to query the data in the student table All data:
SELECT * FROM student;
In Oracle10g, you can use the CREATE INDEX command to create an index to improve query efficiency. For example, you can use the following command to create an index for the ID column of the student table:
CREATE INDEX student_id_index ON student(ID);
After the command is executed successfully, you can use the following command to view the ID in the student table Index used for data of 1:
SELECT INDEX_NAME FROM USER_INDEXES WHERE TABLE_NAME='STUDENT' AND COLUMN_NAME='ID';
3. Summary
Oracle10g is the best in the industry One of the leading database management software with high security, self-management capabilities, high availability and performance. When using Oracle10g, you need to configure the system first, and then install it according to the installation program prompts. When using Oracle10g, you can use SQL commands to create database tables, insert data, update data, and delete data. You can also use the CREATE INDEX command to create indexes to improve query efficiency. When using Oracle10g, you need to pay attention to security and performance, and follow the best practices for database management.
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