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Figure 4-24. Drawing pie charts using canvas API
SQL Server Database
The application saves pie chart data such as sector names and their values in a SQL Server database
( ChartDb ). The ChartDb database consists of two tables : ChartMaster and ChartDetails . The actual data
access happens through Entity Framework. The Entity Framework data model for the ChartMaster and
ChartDetails tables physically resides in the Models folder of the web application and is shown in Figure
Figure 4-25. Entity Framework data model for the ChartDb database tables
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