{"id":1911,"date":"2026-09-04T12:30:36","date_gmt":"2026-09-04T12:30:36","guid":{"rendered":"https:\/\/entri.app\/explore\/?post_type=curriculum&#038;p=1911"},"modified":"2026-09-08T09:28:10","modified_gmt":"2026-09-08T09:28:10","slug":"composite-model-in-power-bi","status":"publish","type":"curriculum","link":"https:\/\/entri.app\/explore\/power-bi\/composite-model-in-power-bi\/","title":{"rendered":"Composite Model in Power BI"},"content":{"rendered":"<h2>What Is a Composite Model in Power BI?<\/h2>\n<p>A composite model in Power BI combines tables using different storage modes \u2014 Import and DirectQuery \u2014 in a single report. This lets you keep large, frequently updated tables in DirectQuery (queried live) while importing smaller dimension tables for faster performance, giving you the best of both approaches.<\/p>\n<h2>How Composite Models Work<\/h2>\n<p>In a traditional model, all tables share one storage mode. A composite model removes this constraint. You set storage mode per table<i><\/i><em><i>:<\/i><\/em><\/p>\n<ul>\n<li>Import: Data loaded into VertiPaq in-memory engine. Fast but only as fresh as the last refresh.<\/li>\n<li>DirectQuery: Queries sent to the source in real time. Always current but speed depends on the source.<\/li>\n<li>Dual: Stored both ways. Power BI chooses Import when possible, DirectQuery when joined to a DirectQuery table.<\/li>\n<\/ul>\n<h2>When to Use Composite Models<\/h2>\n<ul>\n<li>Large fact tables: Keep multi-billion-row tables in DirectQuery. Import smaller dimensions for fast slicers.<\/li>\n<li>Real-time + historical: DirectQuery for live data, Import for historical aggregates.<\/li>\n<li>Multiple data sources: Combine SQL Server (DirectQuery) and Excel (Import) in one model.<\/li>\n<li>Aggregation tables: Imported summaries for high-level visuals, falling back to DirectQuery for detail.<\/li>\n<\/ul>\n<h2>Limitations and Considerations<\/h2>\n<ul>\n<li>Performance trade-offs: Cross-engine relationships can be slower than pure Import.<\/li>\n<li>Security: RLS may not enforce on DirectQuery sources \u2014 verify source-level security.<\/li>\n<li>Calculated columns: Cannot be added to DirectQuery tables. Use Power Query or source views.<\/li>\n<li>Deployment: DirectQuery to Power BI datasets or Analysis Services requires Premium\/PPU.<\/li>\n<\/ul>\n<h2>How to Create a Composite Model in Power BI<\/h2>\n<p>This tutorial walks through setting up a composite model combining Import and DirectQuery in one report. About 5 steps.<\/p>\n<h2>Prerequisites<\/h2>\n<ul>\n<li>Power BI Desktop (latest version)<\/li>\n<li>A database supporting DirectQuery (e.g., SQL Server)<\/li>\n<li>A smaller dataset (Excel\/CSV) to import as a dimension<\/li>\n<\/ul>\n<h2>Step-by-Step<\/h2>\n<p>Step 1 \u2014 Connect to DirectQuery source. Home &gt; Get Data &gt; SQL Server. Choose DirectQuery. Load the large fact table.<\/p>\n<p>Step 2 \u2014 Add an Import table. Get Data again for a smaller table (e.g., Excel). Accept the composite model warning.<\/p>\n<p>Step 3 \u2014 Verify storage modes. In Model View, check each table&#8217;s Storage Mode property. Fact: DirectQuery. Dimension: Import.<\/p>\n<p>Step 4 \u2014 Set a table to Dual (optional). Change a shared dimension to Dual so Power BI optimizes per query.<\/p>\n<p>Step 5 \u2014 Create relationships and test. Define relationships in Model View. Build a visual combining live DirectQuery data with imported dimensions.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>What Is a Composite Model in Power BI? A composite model in Power BI combines tables using different storage modes \u2014 Import and DirectQuery \u2014 in a single report. This lets you keep large, frequently updated tables in DirectQuery (queried live) while importing smaller dimension tables for faster performance, giving you the best of both [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"template":"","meta":{"_acf_changed":false},"curriculum-category":[109,91],"custom_linking_tags":[],"class_list":["post-1911","curriculum","type-curriculum","status-publish","hentry","curriculum-category-data-modeling-in-power-bi","curriculum-category-power-bi-tutorials"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Composite Model in Power BI<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/entri.app\/explore\/power-bi\/composite-model-in-power-bi\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Composite Model in Power BI\" \/>\n<meta property=\"og:description\" content=\"What Is a Composite Model in Power BI? 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