資料來源會使用連接器，從特定平台、系統或產品擷取資料。您可以使用 Google 建構的免費連結器，存取 Google 試算表、Google Ads、Google Analytics 和其他 Google Marketing Platform 產品等資料。您也可以透過社群連接器開發人員計畫，使用 Looker Studio 合作夥伴建構的連接器。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-11 (世界標準時間)。"],[],[],null,["# About data sources\n\nA data source acts as a conduit between the data in an external platform or product, such as a database or spreadsheet, and the charts and controls in a Looker Studio report. When you create a new report in Looker Studio, you either add an existing *data source*, or create and add a new one. You can add more data to the report at any time.\n\nThe following sections explain how data sources fit into the big picture of Looker Studio.\n\nData model\n----------\n\nHaving a consistent definition for the metrics and dimensions that are shared across your business provides a common platform for data analysis.\n\nData sources provide the structure (schema) of the fields you or other report editors can use to create your reports. The data source is where you [model your data](/looker/docs/studio/model-your-data): for example, by creating calculated fields, adding parameters, and adjusting data types.\n\nData sources and connectors\n---------------------------\n\nData sources use *connectors* to fetch your data from a specific platform, system, or product. You can use free connectors built by Google to access data such as Google Sheets, Google Ads, Google Analytics, and other Google Marketing Platform products, and more. You can also use connectors built by Looker Studio partners through the [Community Connectors developer program](https://developers.google.com/looker-studio/connector/).\n| **Note:** Community connectors may cost money to use. If you have issues using a community connector, please contact that connector's developer directly.\n\nVisit the [Connector Gallery](https://lookerstudio.google.com/data).\n\nHow (and when) data sources fetch data\n--------------------------------------\n\nMost data sources maintain a **live connection** to your data. Your data remains in the underlying dataset and is not imported into Looker Studio except as needed to answer a specific request. That data is kept only temporarily.\n| **Note:** The data freshness option lets you set how often a particular data source will request fresh data. Until that threshold is reached, Looker Studio will try to answer queries that are issued by the report from the data in memory. Answering queries with data that's already in memory can be much faster than fetching the data from the underlying dataset. Learn more about [managing data freshness](/looker/docs/studio/manage-data-freshness).\n\nFor even faster performance, you can use an **extracted data source** . The [Extract data connector](/looker/docs/studio/extract-data-for-faster-performance) creates a static snapshot of your data. The extracted data is stored securely in Looker Studio, and you can update the snapshot whenever you want.\n\n**File upload data sources** let you import CSV data into Looker Studio. By using a file upload data source, you can visualize information not otherwise supported by the other connectors. File upload data sources behave in many ways like extracted data sources, except you can't update them automatically. You must import new data manually.\n\nControl access to the data\n--------------------------\n\nAccess to the data that is provided by a data source is handled by **data credentials**:\n\n- **Owner's credentials** uses the credentials of the data source owner to authorize access to the dataset. This option lets you share reports that use this data source without requiring report viewers to have their own access to the underlying dataset.\n\n | **Important:** Before sharing a report or data source that uses Owner's credentials, be sure that you trust the person or persons with whom you share them.\n- **Viewer's credentials** require anyone who attempts to view the data that is provided by this data source to have their own access to the dataset.\n\n- **Service account credentials** use a special type of Google account that is intended to represent a non-human user that can authenticate and be authorized to access your data.\n\nLearn more about [data credentials](/looker/docs/studio/data-credentials).\n\n### Filter data by email address of the viewer\n\nFiltering a data source by viewer email address lets you provide \"row-level\" security over the data. Only the records in your data containing the signed-in viewer's email appear in the report.\n\n[Learn more](/looker/docs/studio/filter-by-email-address).\n\nEmbedded versus reusable data sources\n-------------------------------------\n\nData sources can be either *embedded* or *reusable.* Reports can include both embedded and reusable data sources.\n\n**Data sources that you create while editing a report are embedded** in the report. To edit an embedded data source, you do so within that report. Embedded data sources make collaborating on reports and data sources easier. Anyone who can edit the report can also edit the data source as well as modify its connection. When you share or copy the report, any embedded data sources are shared or copied as well.\n\n**Data sources that you create from the home page are reusable**. You can reuse these data sources in different reports. Reusable data sources let you create and share a consistent data model across your organization. Only people with whom you share the reusable data source can edit it. Only the owner of the data source's credentials can modify the connection.\n\u003e To see whether the data sources in a report are embedded or reusable:\n\u003e\n\u003e 1. [Edit your report](/looker/docs/studio/edit-a-report).\n\u003e 2. In the menus, select **Resource \\\u003e Manage added data sources**.\n\nShare and copy data sources\n---------------------------\n\nWhen you share or copy a report, all of its embedded data sources are shared or copied along with it. You don't need to share embedded data sources separately from the report. This means that other report editors can modify the data source.\n\nReusable data sources aren't copied or shared when you copy or share a report. If you want someone else to be able to modify a reusable data source, then you must share it with them explicitly.\n\nNote that you don't need to share a reusable data source in order for viewers of the report to see the data, or for editors to use the fields provided by the data source to create charts and controls in the report.\n\n[Learn more about sharing reports and data sources](/looker/docs/studio/invite-others-to-your-reports).\n\nRelated resources\n-----------------\n\n- [Share with viewers and editors](/looker/docs/studio/invite-others-to-your-reports)\n- [Blend multiple data sources in a chart](/looker/docs/studio/how-blends-work-in-looker-studio)"]]
