官术网_书友最值得收藏!

Live

A Live connection creates a direct link between the Tableau Data Source and the database (server or file). It means that, if the data changes, you see the impact in Tableau directly after refreshing the Data Source, or when you reopen the Workbook. 

The problem with a Live connection is that you are dependent on the performance of the database. Large text files, big Excel files, or an unoptimized database can be very slow to analyze in Tableau. Also, if you are connected to an online database, you are dependent on the internet connection, and you won't be able to work offline.

For these reasons, I advise you to always work with an Extract.

主站蜘蛛池模板: 武汉市| 静乐县| 蕉岭县| 香格里拉县| 青浦区| 鹿泉市| 马尔康县| 扎赉特旗| 弥渡县| 昌图县| 安西县| 合作市| 邯郸县| 武宁县| 南部县| 肇州县| 芦溪县| 南充市| 鄂温| 九台市| 荆门市| 饶平县| 中西区| 巴林右旗| 南乐县| 开封县| 和田县| 云安县| 阳山县| 龙井市| 孝感市| 古交市| 沁水县| 扎赉特旗| 德惠市| 新闻| 石棉县| 乌海市| 三江| 淮滨县| 灵丘县|