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Analytics & BI

Data Analytics,Big Data,Data Storage and Business Intelligence.

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数据库设计有关范式点滴摘录

216 views   0 comments last modified about 10 years ago

Note1:满足范式要求的数据库设计是结构清晰的,同时可避免数据冗余和操作异常。这并意味着不符合范式要求的设计一定是错误的,在数据库表中存在1:1或1:N关系这种较特殊的情况下,合并导致的不符合范式要求反而是合理的。

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SQL Server Denali_Exception has been thrown by the target of an invocation Solution

2442 views   3 comments last modified about 8 years ago

Issue After I installed Visual Studio 2011 Developer Preview, the error “Exception has been thrown by the target of an invocation” will be thrown when I try to lunch SQL Server Management Studio. Microsoft Connect site has a relevant issue: ...

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Useful T-SQLs (Part I)

344 views   0 comments last modified about 6 years ago

There are a lot of useful T-SQLs we can use in daily work to make things simple. Check transaction log files space usage DBCC SQLPERF (LOGSPACE); Backup Server Certificate ...

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Working with SQL Server Compact 4.0 using Entity Framework 6 and ADO.NET

11625 views   0 comments last modified about 5 years ago

SQL Server Compact 4.0 (CE 4.0) is a free SQL Server embedded database ideal for building standalone and occasionally connected applications for mobile devices, desktops, Web clients and others. In one of my projects, I used it as the database for logging errors, which assumes the errors will onl...

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Generate Formatted Excel Destination (Output) in SSIS Data Flow Task

9819 views   0 comments last modified about 5 years ago

SSIS (SQL Server Integration Service) provides a number of convenient tasks to enable data integration. Exporting data from database to Excel file is a common task in ETL (Extract, Transform, Load) projects. Constantly the users/customers may raise format request regarding the Excel extract. To g...

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Create OLAP Project using SSAS

949 views   0 comments last modified about 5 years ago

Serial: An Introduction to SQL Server Features Case Scenario In the previous articles of this serial, I’ve introduced how to use SQL Server as database for online transaction proces...

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Create ETL Project for Collecting Sales Data using SSIS

2439 views   0 comments last modified about 5 years ago

Serial: An Introduction to SQL Server Features Case Scenario For this ETL project, the requirements are listed below: Sales data will be pushed to specified shared fold...

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Create Business Reports using SSRS

699 views   0 comments last modified about 5 years ago

Serial: An Introduction to SQL Server Features Case Scenario After the data is loaded into the database, reports can be built using SSRS (SQL Server Reporting Service). The g...

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An Introduction to SQL Server Features

596 views   0 comments last modified about 5 years ago

SQL Server provides a batch of great features to build robust, high-performance and scalable data solutions. ...

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Build Online Product Management Website using MVC 3 + Entity Framework + SQL Server

923 views   1 comments last modified about 5 years ago

Serial: An Introduction to SQL Server Features Case Scenario All the samples in this serial will focus on one virtual company that produces and sales mobile phone...

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