create qr code with c# Stars and Snowflakes in Visual C#.NET

Encoding QR Code in Visual C#.NET Stars and Snowflakes

Stars and Snowflakes
QR Code 2d Barcode Printer In Visual C#
Using Barcode encoder for .NET Control to generate, create QR image in Visual Studio .NET applications.
QR Code 2d Barcode Reader In Visual C#.NET
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in .NET applications.
In a production database, it is critical for changing values to be consistent across the entire application: If you change a customer s address in one part of the system, you want the changed address to be immediately visible in all parts of the system. Because of this need for consistency, production databases tend to be broken up into many tables so that any value is stored only once, with links (or joins) to any other places it may be used. Ensuring that a value is stored in only one place is called normalization, and it is very important in production database systems. In a data warehouse dimension, you may have multiple attributes that form a natural hierarchy. For example, several products might belong to a subcategory, and several subcategories are grouped into a category. A database designer who is familiar with creating production databases will want to normalize the dimension so that there is a separate Subcategory table where each subcategory appears only once, and then a separate Category table where each category appears only once. This, of course, requires foreign keys in the Product and Subcategory tables that join to unique primary keys in the Subcategory and Category tables, respectively.
Paint Barcode In C#.NET
Using Barcode generation for Visual Studio .NET Control to generate, create bar code image in .NET applications.
Scan Barcode In C#
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Encode QR Code In Visual Studio .NET
Using Barcode generator for ASP.NET Control to generate, create QR Code 2d barcode image in ASP.NET applications.
Draw QR-Code In VS .NET
Using Barcode maker for .NET framework Control to generate, create QR Code 2d barcode image in Visual Studio .NET applications.
Understanding Business Intelligence and Data Warehousing
QR Code 2d Barcode Drawer In Visual Basic .NET
Using Barcode creation for .NET Control to generate, create Quick Response Code image in VS .NET applications.
Generating QR In C#.NET
Using Barcode printer for Visual Studio .NET Control to generate, create Denso QR Bar Code image in .NET applications.
If you are creating reports against the data warehouse, however, many joins can make the query slow. For example, if you want to see the total sales for the Bikes Category for the year 2006, you would have to join each row in the fact table to the Product table, and then to the Subcategory table, and then the Category table, and also to the Date table, the Month table, then the Quarter table, and finally to the Year table. And you would have to do all those joins to all the rows in the fact table, just to find out which ones to discard. This makes the query for a relational report much slower than it needs to be. The fact is that values in a data warehouse are not changing as dynamically as they would in a production database, so storing the values redundantly is less important than is retrieving the values as quickly as possible for a report. Consequently, in many data warehouses, all the attributes for a dimension are stored in a single dimension table even if that means that categories and years are stored redundantly many times. Storing redundant values in a single table is called denormalizing the data. The concept is that dimension tables are relatively small (compared to the fact tables), and that performing a single join to find out the Year and the Category is much faster with only a couple of joins, so denormalizing is worth doing. Storing all the attributes for each dimension in a single denormalized dimension table produces what is called a star schema, because you end up with a single fact table surrounded by a single table for each dimension, and the result looks a bit like a star. Normalizing each of the dimension tables so that there are many joins for each dimension results in a snowflake schema, because the points of the star get broken up into little branches that look like a snowflake. In reality, it isn t the database that is star or snowflake, because one dimension might be fully normalized (i.e., a snowflake), while another dimension in the same data warehouse might be fully denormalized (i.e., a star). In fact, even within a single dimension, some attributes might be normalized into a snowflake while others are denormalized into a star. If you are creating a data warehouse for the purpose of creating reports directly from a relational database, the more snowflaking you do with attributes, the slower the query that populates the report will run. If, however, you will use the warehouse primarily as a data source for Analysis Services, then the difference between star or snowflake dimension attributes is much less significant, and you can use other reasons (such as which database structure is easier to create and update) as the basis for a design decision.
GS1-128 Creator In C#
Using Barcode drawer for VS .NET Control to generate, create EAN / UCC - 13 image in VS .NET applications.
Drawing UPC A In C#
Using Barcode generator for VS .NET Control to generate, create Universal Product Code version A image in VS .NET applications.
EAN-13 Generation In Visual C#
Using Barcode maker for Visual Studio .NET Control to generate, create GTIN - 13 image in Visual Studio .NET applications.
Paint Leitcode In Visual C#
Using Barcode maker for Visual Studio .NET Control to generate, create Leitcode image in .NET framework applications.
Data Matrix 2d Barcode Drawer In None
Using Barcode printer for Online Control to generate, create Data Matrix image in Online applications.
Scan Bar Code In Java
Using Barcode Control SDK for Eclipse BIRT Control to generate, create, read, scan barcode image in BIRT reports applications.
PDF-417 2d Barcode Generation In Java
Using Barcode creation for BIRT reports Control to generate, create PDF-417 2d barcode image in BIRT applications.
Make PDF 417 In Java
Using Barcode creation for Java Control to generate, create PDF417 image in Java applications.
Recognizing UPCA In C#
Using Barcode decoder for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Encoding QR Code 2d Barcode In Objective-C
Using Barcode drawer for iPhone Control to generate, create QR-Code image in iPhone applications.
Bar Code Creator In Java
Using Barcode generator for BIRT Control to generate, create bar code image in Eclipse BIRT applications.
EAN-13 Supplement 5 Printer In .NET Framework
Using Barcode drawer for Reporting Service Control to generate, create EAN13 image in Reporting Service applications.
Copyright © . All rights reserved.