CREATE文でテーブルを作成する：SQL実践講座（10） ＠IT from www.atmarkit.co.jp
Introduction
Structured Query Language (SQL) is the language used to manage and communicate with relational databases. SQL Server is a Microsoft relational database management system (RDBMS) that uses SQL. SQL Server is used by businesses and organizations to store and manage data. If you are new to SQL Server, this tutorial will guide you on how to use it.
Getting Started
To start using SQL Server, you need to install it on your computer. You can download SQL Server from the official Microsoft website. Once you have installed SQL Server, you can launch it and start using it.
Creating a Database
The first step in using SQL Server is to create a database. A database is a collection of data that is organized and stored in a structured manner. To create a database, you can use the SQL Server Management Studio (SSMS) tool. Open the SSMS tool and connect to your SQL Server instance. Right-click on the Databases folder and select New Database. Give your database a name and click OK.
Creating Tables
After creating a database, you need to create tables to store data. A table is a collection of data that is organized into rows and columns. To create a table, right-click on the Tables folder in your database and select New Table. Define the columns that you want in your table and save it.
Inserting Data
Once you have created a table, you can insert data into it. To insert data, right-click on the table and select Edit Top 200 Rows. This will open a new window where you can enter data into your table.
Querying Data
SQL is used to query data from a database. To query data, open a new query window and enter your SQL query. Run your query to retrieve data from your database.
Updating Data
You can update data in your table using SQL. To update data, write an SQL query that updates the data in your table. Run the query to update the data.
Deleting Data
You can delete data from your table using SQL. To delete data, write an SQL query that deletes the data from your table. Run the query to delete the data.
Backing Up Databases
It is important to back up your databases regularly to prevent data loss. To back up a database, right-click on the database and select Tasks > Back Up. Select the appropriate options and click OK.
Restoring Databases
If you experience data loss, you can restore your database from a backup. To restore a database, right-click on the Databases folder and select Restore Database. Select the backup file and follow the prompts to restore your database.
Conclusion
SQL Server is a powerful RDBMS used by businesses and organizations to store and manage data. This tutorial has provided an overview of how to use SQL Server for beginners. With this knowledge, you can start using SQL Server to manage your own data.
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