Short-term Business Statistics (SBS) provides the information necessary for the calculation of short-term economical indexes (monthly and quarterly) and is developed through the following sub processes (statistical researches), each of which is incorporated as an independent subsystem:
- Sales in the areas of industry, construction, retail and services – monthly;
- Producer prices;
- Domestic turnover – monthly;
- Number of persons employed, hours worked, gross wages and salaries – quarterly;
- Costs for the acquisition of assets – quarterly;
- Non-financial institution activities;
- Building permits, started construction projects.
Short-term Business Statistics is incorporated as a centralized system with the aforementioned subsystems, all of which use a unified method for identification and authorization and have similar behavior and user interface. Additionally there are three general modules, that are used by each of the subsystems;
- Configuration – provides the option for entering and maintaining the classifications, nomenclatures and external data for the subsystem;
- Entering and validating data – validates and verifies the data that is entered;
- Creating and displaying the output data – calculates and display data specific for the subsystem.
Technical Implementation
Short-term business statistics requires data entry and analysis. Microsoft SQL Server Enterprise Edition 2008 serves this purpose. Silverlight is used for the development of the web application, which has the following advantages as a presentation tool:
- Using uniform rules to validate forms from the client and server applications;
- Application development only with .NET/C#;
- Independence of the client application from browsers (Client Browser Issues);
- Quality client-server communication (WCF/SOAP);
- Ability to access the local resources (e.g. file system) of a client machine;
- The user interface is similar in behavior to a desktop application;
- Ability to write complexpresentation and business logic.
Short-term business statistics consists of the following five logic layers and respective technologies:
- Presentation – XAML – contains only the user interface;
- Presentation logic – incorporates C# .NET – interaction and validation logic and security functionality;
- Business logic – C# .NET – the core of the system. Also consists of back-end services
- Data access – ADO.NET and C# .NET – option for reading and writing data in SUBD, orchestration of concurrent access, datatype transformation, transaction control, security and others;
- Database – MS SQL Server 2008 Enterprise, MDX and T-SQL – database scheme, rules for access, validation constraints, triggers, procedures and others.
System Architecture
