Data connections enable you to select and load data from a data source. All data connections are managed centrally from the QMC. Data connections are created in the Qlik Sense data load editor. The user who creates a data connection automatically becomes the owner of that connection and is by default the only user who can access the data connection. The data connection can be shared with others through security rules defined in the QMC.
When you import an app developed on Qlik Sense Desktop, existing data connections are imported to the QMC. When you export an app from a server, existing data connections are not exported with the app.
透過分析連線，能夠整合外部分析與商業探索。分析連線可叫用外部計算引擎，以延伸您可在載入指令碼和圖表中使用的運算式 (當您這麼做時，計算引擎可作為伺服器端延伸 (SSE) 運作)。例如，您可以對 R 建立分析連線，並在您載入資料時使用統計運算式。
Extensions can be several different things: A widget library, a custom theme, or a visualization extension, used to visualize data, for example, in an interactive map where you can select different regions.