> For the complete documentation index, see [llms.txt](https://athome-1.gitbook.io/athome-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://athome-1.gitbook.io/athome-docs/management/tabs/database_instances.md). # Database instances A database instance groups together all the databases retrieved from the same server (for example, all the databases in a MySQL instance). ![Bdd instances - global view](https://2965217165-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBk8u0TPogHtiUd7DaQyf%2Fuploads%2Fgit-blob-aac6e7a5f6b7cce594a1b9568c1429c8a6d0a832%2Fbdd_instances_view.png?alt=media) {% hint style="info" %} These instances can be added using the automatic inventory or manually {% endhint %} {% hint style="success" %} Note that if you modify a field manually, it will be considered locked. This will prevent it from being modified the next time the automatic inventory is uploaded. For more information, see [lock](https://github.com/glpi-network/gitbook/blob/develop/manual/modules/management/tabs/broken-reference/README.md) {% endhint %} In a database instance form, the following information is available: ![Bdd instances - details view](https://2965217165-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FBk8u0TPogHtiUd7DaQyf%2Fuploads%2Fgit-blob-484484729c15b7725e1453da3a29b0396afdac45%2Fbdd_instances_details_view.png?alt=media) * Item type : defines the **type of item** on which the database is installed * Item : Defines the **item** on which the database installed * Name * [Status](/athome-docs/advanced-configuration/status.md) * Associable to a ticket : Yes / Note * [Location](/athome-docs/tabs/common_fields/location.md) * [Database instance type](/athome-docs/tabs/common_fields/asset_type.md) (MySQL, PostgreSQL, MariaDB, etc.) * [Technician in charge](/athome-docs/tabs/common_fields/technician_in_charge.md) * [Manufacturer](/athome-docs/tabs/common_fields/manufacturer.md) * [User](/athome-docs/tabs/common_fields/user.md) * Version * [Comments](/athome-docs/tabs/common_fields/comments.md) * [Update source](/athome-docs/tabs/common_fields/update_source.md) * Active : Yes / No * Database instance category * Has backup : Yes/No * Last backup date :*date* * Port * Path ## Impact Analysis [Impact analysis](/athome-docs/tabs/impact_analysis.md) enables an infrastructure diagram to be drawn up, showing the dependencies and impacts in the event of equipment loss. This can be saved and exported ## Databases [Databases](/athome-docs/management/databases.md) lists all the databases present on the instance ## Management [Management](/athome-docs/tabs/management.md) of financial and administrative information, this information is visible in the 'Management' tab on the current item's form. ## Contracts GLPI supports [contracts](/athome-docs/management/contract.md) management, in order to manage contract types such as loan, maintenance, support... Contracts management allows to: * make an inventory of all contracts related to the organization assets * integrate contracts in GLPI financial management * anticipate and follow contract renewal. ## Documents The [document](/athome-docs/management/documents.md) tab lets you link different types of file to the current item (PDF, txt, png, etc.) You can attach a document already uploaded to GLPI or add a new one directly from this tab. ## Knowledge Base Lists all the articles in the [knowledge base](/athome-docs/tabs/knowledgebase.md) relating to the current item. ## Tickets View all [tickets](/athome-docs/tabs/tickets-list.md) linked to the current item ## Problems This tab refers to all hardware-related [problems](/athome-docs/assistance/problems.md). Problems can also be linked to tickets, projects, etc. This allows you to have a complete scenario when necessary. ## Changes [Changes](/athome-docs/assistance/changes.md) lists all changes related to the current item. From this tab, you can't link a change directly, you can do it from **Assistance** > **Changes** > **Items**. You can create a new change from this page, which will be linked to the current item you have selected. ## Links [Links](/athome-docs/setup/external_links.md) offer several possibilities. Send the GLPI object file to another URL of your choice, or generate an RDP file, for example. ## Certificates Link a [certificate](/athome-docs/management/certificates.md) to your registration. You can manage certificates in **Management** > **Certificates** ## Locks [Locks](https://github.com/glpi-network/gitbook/blob/develop/manual/modules/management/tabs/broken-reference/README.md) are used to prevent a field from being modified when the inventory is uploaded. You can lock/unlock the fields you wish in a GLPI item. ## Notes [Note](broken://pages/XipgLcc0ZI9rHIHkMeM7) lets you add rich-text text and attach a document. ## Domains You can attach [Domains](/athome-docs/management/domains.md) to the current item. Domains are also linked to other items such as records, problems, etc. ## Appliances [Appliances](/athome-docs/management/appliance.md) includes all business applications managed within GLPI. They can be linked to another GLPI item (computer, application, etc.) as well as to another appliance. ## History The *History* tab is used to show any changes made to an item. The following information about the changes is available: * ID of the change. * Date and time the change was made. * User who made the change. If this field is not filled, it means that the action was done automatically (For example: automatic inventory update). * Field that was changed. * Description of the change that was made. The description of the change represents either the difference between the old and the new value (For example with location field: Change HQ to Remote Office A), or the explanation of the action which was carried out (For example: Uninstallation of a software: "Gimp 2.0"). {% hint style="info" %} For dropdowns or objects with a parent/child relationship, the modification of a child will appear in the history of the parent element. {% endhint %} ## All Information For an item, all information is displayed on one page from the *All* tab. This shows all of the tabs of an object's form in one view, one below the other.