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Parent page: Designing with a Connected Workspace
Within a connected Workspace, each design entity that can be stored, managed, and reused, is represented as a specific type of Item. An Item is uniquely identified within the Workspace and can contain any number of Revisions, where a revision contains the data for that Item. Each time a change is made to the data contained within a revision – which for most Item types can be edited directly within an associated temporary editor – it is saved (or re-released) into a new revision of that Item, ensuring that no existing revision can ever be overwritten, and thereby ensuring the highest integrity.
Different Items are used to store and represent different types of data. One Item could represent a schematic symbol, another a PCB component model, while another could contain the generated fabrication data from a released board design. To declare the type of content an Item (or rather its revisions) will be used to contain, its Content Type property needs to be specified when creating or editing that Item. To put this another way, you are in essence specifying the Item Type.
The following table lists the various content types (Item types) that can be created manually by a user in a connected Workspace, along with their:
|Content Type||Associated Folder Type||Content Type Code||Folder Type Code||More Info...|
|3D Model||3D Models||
|Altium Designer Preferences||Altium Designer Preferences||
|Binary File||Binary Files||
|BOM Template||BOM Templates||
|Component Template||Component Templates||
|Draftsman Document Template||Draftsman Templates||
|Draftsman Sheet Template||Draftsman Templates||
|Managed Schematic Sheet||Managed Schematic Sheets||
||Managed Schematic Sheet|
||Output Job Template|
|PCB Assembly Data||Project Catalog||
||Board Design Release|
|PCB Fabrication Data||Project Catalog||
||Board Design Release|
|PCB Project Design||Project Catalog||
||Board Design Release|
|PCB Snippet||PCB Snippets||
|Project Review Package||Project Catalog||
||Board Design Release|
|Project Template||Project Templates||
|Reuse Block||Design Reuse Blocks||
|Schematic Snippet||Schematic Snippets||
|Schematic Template||Schematic Templates||
|Simulation Model||Simulation Models||
An Item can have any number of revisions, which are essentially an evolution of that Item over time. A change is made and the new data content is saved/uploaded/released into a new revision. The data stored in each revision of an item is therefore typically different. To identify between these different revisions of an Item, a revision identifier (ID) is used, which in combination with the Item ID creates a unique identifier for each release of an Item. This gives us the Item-Revision.
A full Item-Revision ID therefore simply identifies a specific revision of a parent Item. There will always be at least one revision of an Item (the first release), but there could be many, depending on how many times the data for that Item has been saved/uploaded/released. An important point to make here is that you can only release to a particular Item-Revision once. If there is a change, then a new Item-Revision must be created. This ensures the highest integrity, as the data contained in a given revision can never be overwritten by re-releasing to the same revision. To release again, a new Item-Revision must be used.
The simplest way to grasp the concept of an Item and its revisions is to think of a 'box', into which all the data for that particular revision of that particular Item is stored. When the Item is released, the data is put into the box and the box is closed. The Item ID and the Revision ID become labels on the side of that box – they allow instant recognition of what the contents of the box is used for. If the data needs to be updated and re-released then the Revision ID is incremented, creating a new box.
Another important aspect of an Item-Revision is its Lifecycle State. This is another identifier that can be used to quickly assess what stage that revision has currently reached in its life, and what designers are therefore authorized to do with it. Where the Revision reflects design changes made to the Item, the Lifecycle State reflects the state of the item from a business perspective, such as
New From Design,
Obsolete, and so on.
Initially, an Item-Revision will be in the
Planned state – ready to receive (and store) the data generated by the applicable save/upload/release process. Once that process is complete, that revision is closed (data cannot be saved/uploaded/released to that same revision again), and the Lifecycle State is set to the next applicable state. While the data for this Item-Revision can not be modified, the Lifecycle State can be changed to reflect just where that Item-Revision is, in terms of its useful life.
Your Workspace provides different types of lifecycle management – from basic management, through simple management including states and state transitions, to fully structured management, where the states and state transitions are organized into distinct stages, with a link between those stages and the Revision ID. Based on these different lifecycle management strategies, a number of standard Lifecycle Definitions are defined, from which you can choose to model the state transitions that an Item-Revision may undergo over time.
An Item-Revision's lifecycle is managed manually and in accordance with company policies and practices. Consider a revision of a PCB Fabrication Data Item, containing the data to physically fabricate a bare board. Once the development team is happy with it, the Lifecycle State of that revision might be elevated to a state such as
In Prototype and, all being well with the subsequently manufactured prototype, would then proceed to an
In Production state. At a later date, another revision of the same Item might be needed (another box!) to introduce better functionality. Once released, this second Item-Revision would progress through prototyping to production, while the lifecycle of the previous Item-Revision passes through deprecation and finally to obsolescence. The point is that the lifecycle information shows how the contents of the 'Item-Revision box' can, or rather are, being used.
The Items themselves are created directly within a connected Workspace, and all of the data needed to manufacture/represent an Item is then stored in that Workspace, against that Item number. Depending on the content type, an Item can be created manually, or automatically as part of a save/upload/release process. All content types can be created from within Altium NEXUS through the Explorer panel. When working with components, creation is also possible through the Components panel.
Once you have defined the required folders, you can proceed to create the content in the Workspace. To create an Item, select the appropriate folder, then right-click in the Items grid region of the panel and choose one of the commands from the Create Item sub-menu. Alternatively, if the folder is empty, use the Add an item control in the center of the region to access the menu.
The Create New Item dialog will appear, providing all controls necessary to fully define the Item.
For many content types, you have the option to edit and release the applicable design document into the initial revision of that content, after creation. To do so, enable the option Open for editing after creation, at the bottom of the Create New Item dialog (which is enabled by default). The Item will be created and the relevant temporary editor will open, ready for you to create the data for that Item. For more information on working with a particular content type, read its dedicated page, a link to which is provided in the table earlier in this document.
An important aspect of the parent folder in which content is created is the Item Naming Scheme employed for it. This defines the format of the unique ID for each Item created in that particular folder. By defining the Item Naming Scheme at the folder level, content can be created quickly within that folder, while adhering to the correct ID naming scheme. This is especially the case when Items are being created automatically 'on-the-fly', rather than releasing to existing Items that have been manually created directly within the target Workspace.
Several default example schemes are available, utilizing the short-form code for either the folder type or the content type (refer back to the table earlier in this document for a list of codes). Using a default naming scheme, the software will automatically assign the next available unique ID, based on that scheme, having scanned the entire Workspace and identifiers of existing content.
Alternatively, should there be a need to have full, manual control over the naming of an Item, select the
[NO ITEM NAMING SCHEME] entry. A unique Identifier must then be defined for an Item as part of its creation. Note that the system will not allow creation of an Item with a duplicated identifier, so manually assigning an identifier requires knowledge of which identifiers have been used.
Irrespective of the setting for the Item Naming Scheme at the folder level, you are free to override any automatically determined ID at the Item level. Modify any such ID as required, through the Create New Item dialog.
There is an infinite number of possible name/numbering schemes that can be used for Items, the ones shown in images within the documentation are just examples. There are numerous discussions you can read about what is the best numbering scheme to use. Generally, the experts agree that a short, non-significant, numeric-only numbering scheme is best. Non-significant means that there is no information encoded into the numbering scheme, such as the product category, sub-category, location, etc, each new Item is simply issued the next number in the sequence.
The length is important because the longer the identifier, the greater the chance of a human making an error when they record or recall the Item ID. Experience and academic study have shown that data entry errors increase as the number of characters increase. Seven digits is believed to be the magic number in terms of being easily and reliably recalled by a human. Beyond a certain length errors increase at an increasing rate – at 15 characters, the error probability is close to 100%.
If it is important in your organization to create identity in the Item ID, then a composite identifier could be the answer. In this case, a simple alpha/numeric commodity prefix code is recommended. For example, consider the ID
D-820-0001. Here the
D in the code could denote Design, meaning this is an Item used for designs. In the next 3 digits, the first digit could denote the product category, such as Peripheral Boards, the second and third digits in the block of three could be used to denote bare boards (
1X) or assemblies (
2X and up). The final four digits in the Item ID are a simple, non-significant, next-in-the-queue type number.
Changing from a local design paradigm to a Workspace one requires migrating existing data to a Workspace. Such data may well have passed through multiple iterations, and have revision numbering assigned that is recognized across the organization. For example, rev.3 of a Magno-Synthetic Digitizer board may well have passed out the door already, with enhancements to be delivered in rev.4. On releasing to the Workspace, having an initial revision that started back at
1 would be confusing to say the least – not just within the organization but, more importantly, to its customer base (who are expecting a later version than their current rev.3!).
To this end, Altium NEXUS provides the ability to manually set the ID for the initial revision of a newly-created Item in a Workspace.
Create the required new Item in the Workspace as usual. After creation, right-click on the Item and choose Properties – giving access to the Edit Item dialog. Click the button, to the right of the Revision ID field. The Set Initial revision Id values dialog will appear, from where you can set the ID to meet your requirements. Fields will be provided, as applicable, to modify the various levels of the ID, in accordance with the chosen Revision Naming Scheme.
Main page: Defining Naming Schemes for a Workspace
To provide the greatest level of flexibility, a Workspace comes with a number of pre-defined Revision Naming Schemes, and also supports user-defined Naming Schemes. The Revision Naming Scheme is specified at the Workspace level, and applied when an Item is created. To specify the naming schemes for the Workspace to which you are currently connected:
The Edit Revision Naming Schemes dialog will appear.
The revision naming scheme applied is chosen at the individual Item level, when creating an Item. Different Items can therefore have different revision naming schemes assigned to them.
A Workspace also comes with a number of pre-defined Lifecycle Definitions, and also supports user-defined Lifecycle Definitions. The Lifecycle Definition is specified at the Workspace level, and applied when an Item is created. To specify the definitions for the Workspace to which you are currently connected:
The Edit Lifecycle Definitions dialog will appear.
The lifecycle definition applied is chosen at the individual Item level, when creating an Item. Different Items can therefore have different lifecycle definitions assigned to them.
Related page: Accessing the Detailed Item View
For a detailed view of the Revision and Lifecycle history of an Item, right-click on the Item in the Explorer panel and choose History from the menu. The Item view (labeled with the Item's ID) will open.
The view presents a textual timeline, as well as a graphical view of the revisions of that Item, and their lifecycle history. Additional detail that is presented in the view will depend on the type of Item being examined. For example, for a сomponent, the constituent model links are presented, along with parametric information.
The graphical region of the view displays a column for each major Revision (where the associated revision naming scheme has more than 1 level). Within each column are the minor revisions and their lifecycle state changes. Right-click on a lifecycle state cell to perform operations including:
The revisions of an Item, and their lifecycle history, can also be browsed and managed from the Explorer panel. Change to the Lifecycle aspect view tab for the selected Item-Revision. To access release data, switch to the Preview aspect view tab.
Enhancing the audit trail for content in a Workspace, Altium NEXUS provides the ability to enter notes when changing the lifecycle state of an Item-Revision and, for many content types, when releasing the source data into planned revisions in the Workspace.
When changing the lifecycle state for an Item-Revision in a Workspace, use the State change note region of the subsequent state change dialog to enter a relevant note for that change.
When releasing source data into a new planned revision of an Item in a Workspace, use the Release notes region of the subsequent Create Revision dialog to enter a relevant note for that release. This facility is available when re-releasing any Item type that supports the Direct Editing paradigm.
The notes added for any revision of an Item can be viewed in the following places:
When connected to a Workspace, flexible functionality is available for removing an Item directly from within Altium NEXUS, from the Explorer panel. Right-click on the Item's entry in the panel and choose the Delete Item command from the context menu. The Delete Items dialog will appear, in which to confirm the deletion. The action is actually a 'soft delete', whereby the Item will be moved into the Trash area of the Workspace. The Trash is essentially a recycle bin into which any content within your Workspace can be moved (through a soft delete action). It is isolated from the rest of the Workspace.
To proceed with the deletion, click the button. The item will be removed and a Deletion Summary dialog will confirm successful deletion. If there was an issue with deletion, this will be flagged to you.
All items deleted in this manner can be found on the Trash page of the Workspace's browser interface. Note that you can only view items that you have personally soft deleted. Administrators will be able to see the full content of the Trash page – so all items that have been soft deleted.
Things to consider in relation to a soft-deleted item:
Anywhere the item was being used will reflect that the item has been deleted.
An item can be restored, or permanently deleted from the Trash page, provided you have editing rights. Permanent deletion is only possible provided it is not being used by a parent item.
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