Data warehouse testing ensures the integrity of data stored in a facility by identifying and correcting errors before they become irreparable. The process uses software to check data sources and compare current conditions with the original state. Exceptions are flagged for review and can be fixed using built-in protocols or manual analysis. Regular testing is […]
Companies and individuals are increasingly using the internet for business and personal transactions. Web data mining tools and techniques are used to identify patterns and improve customer service. Techniques include web content mining, web usage mining, and web structure mining. Data mining association analysis and regression are also used to predict future outcomes. Data mining […]
Data stream mining extracts information from an active stream of data without interrupting the flow. It can involve all types of data, and accurately predicts how to locate desired information. Examples include ATM transactions and web research. The main benefit is the ability to access and search data without prohibiting others from using it. Data […]
Data packages are pre-made databases that teach computer programs about information stored within them. They simplify information exchange, save time, and improve network concurrency. Fact-checking is crucial to avoid system-wide errors. Data packets can be searched using SQL queries, making them a useful tool for retrieving elementary facts. A data package is a collection of […]
A data archive is a collection of data stored on a computer, typically subdivided and categorized by specific business areas or job functions. There are two main types of data managed in data stores: transactional data and reporting data. Most companies have data stores for each area of the business, and a data warehouse can […]
Variable data printing (VDP) allows for personalized printing without interrupting the process. It has become popular in marketing, customer relations, and book publishing. VDP software includes raster image processors and print stream methods. VDP has increased ROI for marketers and is used in book publishing and email marketing. The industry is predicted to continue growing […]
Dirty data is inaccurate electronic data caused by errors or intentional omissions. It can be corrected by updating or replacing outdated information. Some dirty data is intentional and may not be corrected if it has no impact on business function. Dirty data is a term used to describe any type of electronic data that is […]
Data mining projects identify patterns in large data sets to inform decision-making. Personnel from various areas of the organization are required, and software and skill sets are necessary. The four phases include a requirements document, defining user specifications, implementing the database, and writing queries and reports. A data mining project is usually started by business […]
Data center outsourcing is becoming popular for businesses that require secure computer networks and reliable servers. It allows companies to control networks in a secure environment while reducing costs. Data centers are controlled environments where computer servers are stored, maintained, and networked. Outsourcing is beneficial for cost reduction, space optimization, and real-time IT support. Co-location […]
Data cleansing is the process of ensuring accuracy and consistency in a set of data. It involves correcting errors, deleting stale records, and filling in missing information. It is important for efficiency in data-dependent businesses and when merging datasets. It can be done manually or with computer programs. The goal is to minimize errors and […]
Data models are a logical representation of business processes and are divided into three phases: domain, logical, and physical models. Domain models are high-level views of business units and their relationships. Logical models represent actual business requirements, while physical models are the blueprints for the actual database. A software application typically stores business information in […]
Data mining and data warehousing are often confused, but have different designs, methodologies, and purposes. Data mining uses pattern recognition to identify trends in a sample set, while data warehousing extracts and stores data for easier reporting. Data mining is used for targeted marketing and fraud detection, while data warehousing is part of business intelligence. […]
Information hiding in computer programming involves keeping parts of a program separate for ease of updating and scalability. Encapsulation is key to keeping segments of the program separate. Modern programming languages use objects to perform specific tasks and make it easier to write programs. Objects can have multiple versions called from different segments of the […]
Data mining classification is a process of grouping items based on key characteristics. Techniques include nearest neighbor classification, decision tree learning, and support vector machines. Other methods include clustering, regression, and rule learning. Algorithms like Bayes’ naive classification and neural networks are used for probability and mimicking human brain, respectively. Support vector machines use a […]
3D data visualization is a computer program that creates a visual representation of data in 3D, which can be static or dynamic. It can access local information but web information may be limited. 3D creates more visually striking representations and dynamic views update automatically. Three-dimensional (3D) data visualization refers to a computer program or other […]
To evaluate data warehouse solutions, consider user interface, features, support, and infrastructure. User interface design is crucial for success, and features should meet business requirements. Support includes technical and functional assistance, and infrastructure requires dedicated hardware and trained staff. Consider the availability of resources and complexity of the tool before making a decision. There are […]
Data transformation involves converting information from one format to another, including programs and languages. SQL is used to manage data, and an executable program converts data into desired formats. Data brokerage uses a data model as an intermediary. Improvements in technology allow for easier sharing of data across platforms. Data transformation is the process of […]
Data redundancy in databases creates unnecessary duplicate data that can negatively affect system function and information retrieval. Flat programs and manual data entry are particularly susceptible. Data management involves identifying and removing duplications, which can be done through system controls or software programs. Duplicate data can slow down essential functions and complicate tasks, but can […]
Data flow refers to how data moves through a computing application. Data flow diagrams (DFDs) map how data is transmitted and are essential in architecture design. Data flow analysis examines a company’s data, while network engineers manage the flow of data packets on a computer network. Data flow programming is used in accounting and finance […]
Data storage devices are used to record and retrieve information. They can be internal or external, permanent or temporary. Solid state drives are popular due to their portability and lack of moving parts, but they wear out over time. A data storage device is any mechanism used to record data so it can be retrieved […]
