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Search the site for the term 'database'

  • 03/02/2017

    WCF (Windows Communication Foundation) is a framework for creating distributed applications whose components communicate with each other through services, using a wide range of network protocols. In this article I will comment on the fundamentals of creating and configuring one of these services through a data connector for the DBTextFinder application, a program to search for texts in a database that can be extended to connect to any data management system.

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    Software developingProgramming in csharp languageArticles about networking and communications programming
  • 16/12/2016

    All major database servers allow the creation of executable objects, such as functions or stored procedures, using some type of SQL extension language, such as PLSQL in Oracle or T-SQL in SQL Server, so that we can create applications to access and manipulate data in a more sophisticated way. In this article I will show how we can access the source code of these objects from any program using the catalog views of three of the most popular RDBMS, MySQL, Oracle and SQL Server.

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    Sections related with databases viewData access and designTips & Tricks
  • 09/12/2016

    In this article I will continue with the integration of CLR objects into a SQL Server database by showing how to implement triggers and create user-defined data types. It is a simple way to extend the functionality of our database applications with all the power provided by the CLR of the .NET framework.

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    Sections related with databases viewData access and designTips & Tricks
  • 02/12/2016

    In this article I will show you how you can easily extend the SQL of your SQL Server servers with functions and data types of the .NET Framework CLR (Common Language Runtime). To do this, I will implement a function with scalar return value, another function with table return value, a pair of aggregation functions and a stored procedure.

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    Sections related with databases viewData access and designTips & Tricks
  • 21/10/2016

    The PISA database contains, in addition to the scores of students, a lot of demographic, socioeconomic and cultural data about them, collected through a series of questionnaires, that allow contextualize the academic results and make studies with a great number of variables. Most of these data are categorical, making the correspondence analysis a particularly appropriate tool to work with them. In this article I will show you how to easily perform this analysis using the ca package of the R program.

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    Data analytics related sections viewSections related with the R programPISA database
  • 26/06/2016

    When you design a database, you can make a series of errors or omissions that, later, can result on many headaches, or you can shelve the use of some useful resources simply because of ignorance of them. In this article I will give you a few tips that can help you to better design and management of your data and applications that manage them, especially if you are a beginner.

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    Sections related with databases viewData access and designTips & Tricks
  • 02/04/2016

    The catalog views contain all the information concerning the structure of the database: schemas, tables, table fields, data types of the fields, integrity constraints, stored procedures code, etc. The knowing of them is essential to develop tools for data management independent of the structure. In this article we will view an example of one of these tools, DBTextFinder, a simple application that will allow us to search for text in the records of our database and within the code of the views and stored procedures.

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    Sections related with file and software downloadsApplication downloadsDatabase tools
  • 02/04/2016

    In this post we will look at the data structures and the necessary interfaces to develop connectors for any database to add to the DBTextFinder application, a tool for finding text in registers, stored procedures and views. You can also download sample code, developed with Microsoft Visual Studio 2013 with connectors for SQL Server, Oracle 12c and MySQL.

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    Sections related with file and software downloadsDownload source code section
  • 19/02/2016

    Every three years, since 2000, the OECD (Organization for Economic Cooperation and Development) performs a series of tests in a number of countries at national level to 15-years-old students, in order to assess the degree of knowledge in three main groups of areas: science, reading and math. This is the PISA program, whose last edition took place in 2015.

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    Data analytics related sections viewSections related with the R programPISA database
  • 30/01/2016

    PISA (Program for International Student Assessment) is a program of the OECD (Organization for Economic Cooperation and Development) for the evaluation of education policies. It consists of a series of tests and surveys conducted to 15 years old students, schools and parents at national level in the countries participating in the program (in 2012 there were 65 participating countries, and in 2015 there are more than 70). These tests seek to assess the level of knowledge in three main areas: Reading, science and math.

    In this article I make a brief introduction to SQL Server database created from the original data published by the OECD.

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    Sections related with databases viewSection dedicated to the POD projectPISA database
  • 16/01/2016

    From this page you can download an installable copy of the POD Configuration database. You can find also instructions to install and setup it on the server, and to download a free version of SQL Server.

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    Sections related with file and software downloadsSections related with databases viewSection dedicated to the POD project
  • 16/01/2016

    In this page you can download the central PISA database, which contains all the common data for all countries, as questions, response values and territorial divisions.

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    Sections related with file and software downloadsSections related with databases viewSection dedicated to the POD project
  • 16/01/2016

    In this page you can find the instructions and the links to download and install each PISA national database with the responses of students, schools and parent questionaires of the years from 2000 to 2012.

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    Sections related with file and software downloadsSections related with databases viewSection dedicated to the POD project
  • 07/01/2016

    POD (Portal Open Data) is a project that I started when I was studying to obtain Microsoft Web Developer MCSD, in order to do some practices. Consists of a SQL Server database through which on can access to other databases in a centralized way.

    In this article I describe the POD Configuration database

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    Sections related with databases viewSection dedicated to the POD projectPOD configuration database