1.1.2. Overview of services

Data Lab services run on the server side, close to the data, to minimize large data transfers over the internet. Clients can access these services from anywhere. The services provide functionality, such as user authentication, database queries, image cutouts, and storage of results, while clients provide a user interface to the services. The table below organizes the services by function, and lists the typical clients used to access them.

Function	Service	Client
Sky exploration	Image discovery tool Catalog overlay tool Catalog visualization tool (prototype)	Web browser Web browser Web browser
Authentication	Web service authManager.py	Web browser authClient.py, Helpers.py datalab command
Catalog query	TAP Service queryManager.py	Web client TOPCAT queryClient.py, Helpers.py datalab command queryClient.py, Helpers.py datalab command
Image query	Simple Image Access service	HTTP
Query result storage	myDB Virtual storage space, storeManager.py	Web client queryClient.py, Helpers.py datalab command Web client queryClient.py, Helpers.py datalab command
File transfer	Virtual storage space	datalab command storeClient.py
Analysis	Jupyter notebook server	Web browser

The graphic below illustrates how a remote user can access Data Lab services.