good example of data modelling?
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http://www.databaseanswers.org/data_models/
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Could you tell me what exactly you're looking for? I deal with a lot of these data problems at work everyday. I need to understand a few things:1. What geography are you talking about? 2. For what are you doing the report? school/b-school/business? 3. What do sort of inferences are you looking for in your data? Do you want to establish eating habits/buying behaviour/etc? You can write to me on equitymonkinlove@yahoo.com
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Look up good books like C J Date, SQL For Smarties by Joe Celko or a site like\nhttp://www.learndatamodeling.com/
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Specific techniques for representing knowledge about products and processes, and for reasoning formally about them. \nhttp://www2.info.ucl.ac.be/research/projects/AVL/ReqEng.html
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well yeah. this one http://www.webspawner.com/users/enterdataathome/
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Create seperate databases for different types of data.
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All the time.  Everything in computer modelling comes down to geometry.  Its all about the polygons (which are really just lots and lots of triangles)
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If the data is well ordered I use excell. It's fast, has many features for sorting and calculating and you can even program all the functions that you can not find, with VBA macros. VBA is a pretty easy language to learn.\nFor all other cases I write programs in java but any high level language would do like Perl, ruby, python etc. All of this languages have regular expression functionality that should help you to manipulate and sequence the data.
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Please take a look at MnoGoSearch. It is free/open source software. So you have freedom to study by using it as the example. ( you can access its source code )
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Start at the link below.  You'll want to use ADO .NET 2.0.  At the link below, there are two links on the left that provide some introductory material, "Data Fundamentals" and "Using Data Access Technologies".\n\nYou can also do a Yahoo! search on "ADO tutorial".
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It depends on what you are talking about, there are many different types of models.\n\nAbstractions, concepts or software\n    * Model (abstract), a conceptual or theoretical representation of a phenomenon\n    o Mathematical model\n    * Model (computer games), in 3D computer graphics, the computer generated image of a character or an object\n    * Computer model, a computer program which attempts to simulate an abstract model of a particular system\n    * Mental model, a person's cognitive representation of an idea or thought process\n    * Model theory, study of the representation of mathematical concepts\n    * Modeling (NLP), a process in neuro-linguistic programming\n    * Similitude (model), in engineering, used in the scientific testing of physical models\n    * Solid modelling, study of unambiguous representations of the solid parts of an object\n    * The Standard Model, the theory in particle physics which describes certain fundamental forces and particles\n    * model building (particle physics)\n\nPhysical objects\n    * Model (physical), a physical representation of an object\n    * Scale model, a replica or prototype of an object\n\nPersons or occupations\n\n    * Model (art), a person who poses for purposes of art, for example in art school (often known as an artist's model)\n    * Model (person), a person whose occupation is to display products, eg. a fashion model\n          o Supermodel, a model who attains celebrity status\n    * Promotional model, a person who promotes a product or service\n    * Role model, a person who serves as a behavioural or moral example to others
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The link is the "DATA" or the Database\n\nData Mining is a class of database applications that look for hidden patterns in a group of data that can be used to predict future behavior. For example, data mining software can help retail companies find customers with common interests. The term is commonly misused to describe software that presents data in new ways. True data mining software doesn't just change the presentation, but actually discovers previously unknown relationships among the data.\n\nA data warehouse is a collection of data gathered and organized so that it can easily by analyzed, extracted, synthesized, and otherwise be used for the purposes of further understanding the data. It may be contrasted with data that is gathered to meet immediate business objectives such as order and payment transactions, although this data would also usually become part of a data warehouse.
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System for transforming raw data into information that can be used in decision making.
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Could you give a few examples please?
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encoding and modelling tools are very suitable to use.
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Product Lifecycle Management\nProduct Data Management\n\n[modified below to give some source material]\nPLM http://en.wikipedia.org/wiki/Product_Lifecycle_Management\n\nPDM http://en.wikipedia.org/wiki/Product_Data_Management
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Systems Applications and Products in Data Processing.