库Oracle11新建数据库及其使用方法（oracle11新建）

Oracle 11: Creating a New Database and Its Usage Method

Oracle 11 is a popular database management system that allows users to create and manage databases. This article will provide a step-by-step guide on how to create a new database using Oracle 11 and explore its usage methods.

Step 1: Install Oracle 11

Before creating a new database, you must first install Oracle 11. You can download it from the official Oracle website and follow the installation wizard to complete the installation process.

Step 2: Create a New Database Instance

To create a new database instance, you need to use the Oracle Database Configuration Assistant (DBCA).

1. Open the DBCA by selecting it from the Start menu.

2. Click on “Create Database” to begin the process.

3. Select “Advanced Mode” and click “Next.”

4. Choose “General Purpose” and click “Next.”

5. Choose a name for your database and fill in the necessary detls, such as the administration password and character set. Click “Next” to proceed.

6. Choose the database options that you want to enable, such as automated backups and the sample schema. Click “Next” to proceed.

7. Review your settings and click “Finish” to start creating the database instance.

Step 3: Create a Table

Once you have created a new database instance, you can start creating tables. To do this, you need to use the SQL*Plus tool.

1. Open SQL*Plus and log in to your database.

2. Enter the following code to create a table:

CREATE TABLE table_name (

column1 datatype,

column2 datatype,

column3 datatype,

….

);

Replace “table_name” with the name of your table and “datatype” with the appropriate data type.

3. Type “DESC table_name” to display the structure of your new table.

Step 4: Insert Data into the Table

After creating a table, you can insert data into it using the SQL*Plus tool.

1. Enter the following code to insert a new row into your table:

INSERT INTO table_name (column1, column2, column3, …)

VALUES (value1, value2, value3, …);

Replace “table_name,” “column1,” “column2,” “column3,” and “…” with the appropriate names and values.

2. Type “SELECT * FROM table_name” to display the data in the table.

Step 5: Query the Data in the Table

Once you have inserted data into your table, you can query it using the SQL*Plus tool.

1. Enter the following code to query the data in your table:

SELECT column1, column2, column3, …

FROM table_name

WHERE condition;

Replace “column1,” “column2,” “column3,” “table_name,” and “condition” with the appropriate names and values.

2. Type “DESC table_name” to display the structure of your table.

Conclusion

Oracle 11 is a powerful database management system that can be used to create and manage databases. By following the steps outlined in this article, you can easily create a new database instance, create a table, insert data into the table, and query the data.