luxData    luxData.lsa    luxData.vz    luxData.dev
	General luxData Database administration Report designer Technology luxData on the web luxData mobile luxData with GIS luxData with SAP   luxData® Technology Multi-level client-server architecture (simplified depiction) Our management information system luxData® is realised as a multi-level client-server solution. This architecture offers significant advantages for all users. The client-server principle In local networks, the client-server architecture is used to render "dispersed intelligence" useful. All integrated components such as servers and the individual workstations are treated as intelligent, programmable units, in which the entire performance capacity can be exploited. The work stages of an application are divided over two separate components, a client (customer) and a Server (service provider). The client component is a complete personal computer. The server component can be used to save data stock, which all or selected client components can access. The server component, which can consist of another personal computer or a mainframe computer, supports the client component with the traditional strengths of a mainframe computer in a timesharing environment: data administration and information dispersion between the clients and a highly developed network administration and also security measures. The client component of an application is optimised for communication with the users, whereas the server component offers the central multi-user function. Master data, which often defines the selection of list fields, is stored on the client and only replicated by the server whenever necessary. This provides a massive cut in network traffic. Explanation on the basis of a malfunction procedure: The strengths of a database such as SQL servers or Oracle are: The network experiences less load as the database server only passes back the data that the client requires. Multi-user operation. The ability of a computer to support several users at the same time while offering every user the same bandwidth of functions in the computer system. Greater reliability and improved data protection also speak in favour of the client-server solution. The reliability in a file-server system (e.g. Access) is limited as the database is administrated as a file in the file system and can easily be damaged. In a client-server solution, Oracle or SQL server are used as databases, for example. Backup mechanisms mean that loss of data can practically be excluded. The possibility and security of transactions: a transaction is an operation on a database system to preserve consistency. This means that the transaction transfers a consistent database state into a new and equally consistent state. In the event that a transaction consists of many individual stages, for example, it is ensured that in the event of the transaction being aborted, the steps that have already been carried out are reversed. The transaction is performed completely or not at all. Guarantee of data integrity in input control to preserve data consistency (logical data integrity), data backup for technical and manual faults (physical data integrity) and data protection (ethical data integrity) by ensuring that the access controls for individual users can be restricted by assigning views, for example. Environment Installation In general installation of the programme is dealt with by an employee of sixData GmbH or by a distribution partner. Hard and software requirements The following hardware is recommended for operating the system. This is a modified configuration. Deviations from this are possible, of course, but should be discussed with sixData GmbH. Workstation Pentium III with At least 500 MHz and 256 MB RAM 2 GB free hard disk space Server The requirements of the server are based on the database in use (Oracle or SQL server). In the event that the company does not have a database, luxData will be supplied with MSDE (free version of the SQL server, up to 2 GB). Monitor 17 inch (better 19 inch) colour monitor with SVGA card and a resolution of at least 1024*768 pixels. Printer For issuing matching protocols and city map diagrams, results diagrams and video images, we recommend using a laser printer in A4 format. Scanner (optional) A black and white or colour scanner of the type HP or similar is necessary for registering map diagrams, product documentation and damage. etc. Digital camera (optional) Photos can be displayed and printed out in luxData in order to register complicated mast situations, signposting, damage and installed lighting. For this purpose, you can use an electronic still camera with PC interface. Another option is to develop standard negatives on a KODAK CD and then to integrate them in the application. You can also use a scanner. System requirements for the network Recommended bandwidth, at least 100 Mbit Operating systems Windows 98 / ME (not recommended) Windows NT4 workstation or server Windows 2000 workstation or server Windows XP Home or Professional Windows 2003 Server Individual workstation installation (local database server) is possible. The free MSDE (Microsoft Database Engine) can be used for this. The MSDE is optimised for five competing connections, and the size of the database can be a maximum of 2 GByte. In view of the fact that the luxData database model is extremely standardised, this limit is not reached until there is a stock of approx. 200,000 systems. Installation under a terminal server is also possible.