# Source: https://dbeaver.com/docs/dbeaver/New-Table-Creation/

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    * Table Creation  Table Creation 
      * New table creation  [ New table creation  ](./) Table of contents 
        * Create table 
          * Saving changes 
        * Modify table 
        * Delete table 
        * Restrictions on table creation 
      * [ Incorporating triggers  ](../Incorporating-Triggers/)
      * [ Creating columns  ](../Creating-columns/)
      * [ Creating indexes  ](../Creating-Indexes/)
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Table of contents

  * Create table 
    * Saving changes 
  * Modify table 
  * Delete table 
  * Restrictions on table creation 

  1. [DBeaver](/docs/dbeaver)
  2. [Tutorials](/docs/dbeaver/New-Table-Creation)
  3. Table Creation

# New table creation

This guide provides detailed instructions on creating a new table in DBeaver.
This is a beginner-friendly guide, meaning it is written for individuals who
may not have previous experience with databases or DBeaver.

A database table, the focal point of our guide, is a systematic arrangement of
data. It consists of rows and columns, forming cells where the data resides.
While the number of columns is fixed for a table, it can encompass an
unlimited number of rows. The maximum number of columns a table can have in a
database depends on the database management system. DBeaver facilitates
various operations, including data manipulation and data definition, with
these tables.

Initially, the guide will cover the essential step of creating a table. After
successfully creating a table, there are several enhancements you can add,
such as columns, constraints, indexes, and triggers. The creation of a table
is a fundamental operation in database management, and while there are many
aspects to consider, not all of them are mandatory. The only mandatory step is
the creation of the table itself and the definition of [columns](../Creating-
columns/). The rest are optional and can be used to enhance the functionality
and integrity of your database.

While this guide is designed around PostgreSQL within DBeaver, the processes
can vary slightly with other database systems.

## Create table¶

In DBeaver, creating a table is a straightforward process. Once you've
[connected to your database](../Create-Connection/), you can initiate the
table creation process by right-clicking on the Tables folder in the
**[Database Navigator](../Database-Navigator/)** and selecting **Create New
Table**.

![](../images/tutorial_images/1_CreateNewTable.png)

Upon creating a new table in DBeaver, a window will open presenting the
**[Properties editor](../Properties-Editor/)**. This is the dedicated
interface where you can manage and manipulate your tables. The specific
options available to you will depend on the capabilities of your chosen
database system.

![](../images/tutorial_images/2_NewTable_NoData.png)

There are also various ways to create a table: from the **Properties editor**
and from the **Diagram**.

  * From **Properties editor** : In the **Database Navigator** , double-click on the database name or table name, or select **View schema** from the context menu. In the window that opens, navigate to the **Properties** tab, select the **Tables** section, right-click on the window, and choose **Create New Table**.

  * From **[Diagram](../ER-Diagrams/)** ![](../images/commercial.png) : In the **Database Navigator** , double-click on the database name or table name. In the window that opens, navigate to the **Diagram** tab, right-click on the window, and choose **Create New Table**. Alternatively, in the **Database Navigator** , right-click on the database/table name and click **View Diagram**. In the window that opens, you can right-click and choose **Create New Table**.

### Saving changes¶

Saving a table in DBeaver is a crucial yet straightforward process. Once you
have defined the properties of the table, it's important to commit these
changes to the database. Until you save your changes, your new table exists
only within DBeaver and hasn't been created in the actual database. Here are
the three options for saving the changes:

  * Click on **File** -> **Save** -> **Persist**.
  * Select the desired table in the **Database Navigator** and press `Ctrl+S` (or `CMD+S` for Mac OS), choose **Persist** to save the changes.
  * Utilize the **Save** button ![](../images/tutorial_images/10b_SaveButton.png) located at the bottom of the **Properties editor** and press **Persist** to save the changes.

![](../images/tutorial_images/10_Table_Save.png)

## Modify table¶

Modifying a table in DBeaver involves adjusting its structure or properties,
such as adding, removing, or changing columns, adjusting constraints, or
altering table settings. To make adjustments, navigate to the **Properties**
editor. Access this by right-clicking the table's name in the **Database
Navigator** menu and selecting **View Table**.

![](../images/tutorial_images/3_View_Table.png)

The specific options and capabilities available to you when modifying a table
will depend on the database system you're working with. Always refer to the
documentation of your specific database system for detailed information.

## Delete table¶

Deleting a table in DBeaver involves a few simple steps. Firstly, navigate to
the table you wish to delete in the **Database Navigator**. Once you've
located the table, right-click on it and select the **Delete** option from the
context menu. A confirmation dialog box will appear, allowing you to review
the action before it's performed.

![](../images/tutorial_images/3a_Delete_Table.png)

Upon confirming your decision, DBeaver will execute the necessary SQL command
to remove the table from your PostgreSQL database. Please be aware that this
action is permanent, and any data stored in the table will be irretrievably
lost. Therefore, it's crucial to ensure that you've adequately backed up any
important data before proceeding with the deletion.

**Important** : The confirmation dialog box, which appears when you are
deleting a table in DBeaver, offers an important feature called the **Cascade
delete** option. This option, when selected, automatically removes all related
records in child tables, aligning with the deletion of a record in the parent
table. While this can be useful for maintaining data integrity, it should be
used with caution. If not handled properly, it can lead to unintended data
loss by deleting records that you may not have intended to remove. Always
ensure you understand the relationships and dependencies in your data before
using the **Cascade delete** option.

## Restrictions on table creation¶

DBeaver is a database management tool, and as such, it doesn't impose its own
restrictions on table creation. Instead, the restrictions that apply when
creating tables are determined by the specific database system you're using.

However, there are some general considerations to keep in mind when creating
tables:

  * **Naming Restrictions** : The name of the table must be unique within its schema. Most database systems also have restrictions on the length of the table name and the characters it can contain.

  * **Storage Restrictions** : The total amount of data that can be stored in a table is determined by the storage capacity of the database system.

  * **Performance Considerations** : While not a restriction per se, it's important to note that the structure of a table can have significant impacts on the performance of data retrieval and manipulation operations. For example, having a large number of columns, especially ones that are rarely used, can slow down query performance.

Remember that the specific restrictions and limitations can vary depending on
the database system you're using. Always refer to the documentation of the
specific database system for detailed information.

  
  
  
  
**Further Reading:**  
New Table Creation | [Creating columns](../Creating-columns/) | [Implementing constraints](../Implementing-Constraints/) | [Utilizing foreign keys](../Utilizing-Foreign-Keys/) | [Creating indexes](../Creating-Indexes/) | [Incorporating triggers](../Incorporating-Triggers/)

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