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What kind of workflows does the CSOM support?
Support declarative Project Server workflows The CSOM enables Project Server workflows that are created in SharePoint Designer 2013. The CSOM supports workflow definitions that use Windows Workflow Foundation version 4 (WF4). (The PSI does not support WF4 workflows.)
The Workflow Services CSOM consists of several different services that are used to perform different tasks. Each of these is discussed in the following sections. There is one additional service that is not present in the CSOM, but is present instead with the server-side API.
What can the CSOM do for a project?
Get data in the published tables of the Project database Because direct database access to the draft, published, and archive tables is not supported, you can use the CSOM to read data that is not available in the reporting tables or views. For example, get information about workflow stages, phases, and activities.
How does aggregate CSOM work in Microsoft Azure?
Aggregate CSOM calls within a local component or a component that runs on Microsoft Azure. Use OData queries of the reporting data, instead of directly accessing reporting tables in the Project Server database.
If you want to use CSOM SharePoint 2013 or CSOM SharePoint Online, first create a console application, windows form application or an asp.net application using visual studio. Once you create the application, then you can add the below DLLs from NuGet. Microsoft.SharePoint.Client.dll
Request limits of the CSOM. SharePoint has a 2 MB limit for an operations request, and a 50 MB limit for the size of a submitted binary object. The request size is limited to protect the server from excessively long queues of operations and from processing delays for large binary objects.