Lossless data compression reduces file size without losing information. Common file types include zip and gzip archives, as well as image formats like GIF and PNG. Algorithms vary based on file type, with statistical and mapping models used. Some algorithms are open source, while others are proprietary. Mixed file archiving can degrade components, and efforts […]
Data scrubbing is the process of finding and correcting errors in a database, which can be caused by human error, merging databases, or outdated data. Specialized software can be used to cleanse the information, but it requires customization and can be expensive. Skipping this step can lead to inaccurate data in a data warehouse. Data […]
Data warehouse architecture is a design for storing complex business data in a central domain for data mining, business intelligence, and general access. It includes reporting, data management, security, bandwidth, and archiving requirements. The architecture should be broken into specific domains, including source system access, staging area process, data enrichment process, data architecture, business intelligence […]
Data center virtualization is the process of moving information storage from physical to virtual servers in different locations, reducing costs and increasing data availability. It combines high-speed data transfer and server virtualization, allowing data to exist in multiple locations and reducing the need for physical servers. It also costs less than traditional data storage and […]
Data integration combines multiple data sources into one, but it can be complex due to incompatible formats. Databases are the most common storage method, but differences in presentation and content can hinder integration. Business and research are the main areas requiring integration, and the prevalence of free online databases has increased its importance. Data integration […]
Open source data recovery tools can easily fix issues like deleted files, damaged disks, and corrupted storage media. The best software should recover deleted files, emails, music, and documents, as well as extract files from CDs and USB drives. It can also search for essential files on a formatted hard drive and recover encryption keys. […]
Data mining methods extract insights from collected data using various tools. They are used in fraud protection, marketing, and surveillance. Modern techniques use automated concepts to deliver substantial data via computerized resources. The commonly used method is Knowledge Discovery in Databases (KDD). Basic data mining methods involve four types of tasks: classification, clustering, regression, and […]
Data structures organize information in a computer’s memory, with different types being more efficient for different purposes. Arrays assign sequential memory addresses, linked lists allow for dynamic growth, trees sort nodes hierarchically, and hash tables determine memory addresses using an equation. All aim to reduce the number of instructions needed to access data. A data […]
Data compression reduces file size, making them faster to transfer and leaving more storage space. Compression involves applying an algorithm that makes repetitive bits redundant. Files may be split into pieces before sending, and various music formats use compression techniques. Compression programs are widely available online. Data compression is an umbrella term for a group […]
Data warehouses store large amounts of data and have two main design types: top-down and bottom-up. Data marts are collections of data based on a single concept and are managed differently in each design. Top-down is comprehensive but expensive, while bottom-up is cheaper but less complete. Both have strengths and weaknesses. Data warehouses store large […]
Data mining analysis provides different results based on the algorithm used. Common types include EDA, descriptive modeling, predictive modeling, and pattern and rule discovery. Each tool offers a unique perspective, allowing professionals to gain insight into concerns. Data mining analysis can be a useful process that yields different results depending on the specific algorithm used […]
Data mining technology is used for marketing, security, and information gathering. It is commonly used to test samples of data and is developed by companies for specific businesses. Insurance, retail, and customer service industries use data mining techniques to increase profitability and identify the best customers. Friction modeling identifies customers likely to switch suppliers and […]
Data mining technology is used for marketing, security, and information gathering. It is commonly used to test samples of data and is developed by companies for specific businesses. Insurance companies use it to verify claims and identify fraud, while retailers use it to identify their best customers and increase profitability. Friction modeling helps all industries […]
The International Data Encryption Algorithm (IDEA) encrypts plain text data into encoded characters. It was created in 1991 as a replacement for the easily cracked Data Encryption Standard (DES). The Strong Encryption Standard (AES) replaced DES in 2001, but IDEA is still widely used, especially in email encryption protocols like PGP and OpenPGP. IDEA supports […]
Data processing systems use computer programs to turn raw data into information through transaction processing. The first system was developed in the 1800s, with technological advances leading to the creation of modern components such as processors and hard disk storage. Input methods include keyboards and external media, and configurations include mainframes, mid-range computers, and client-server […]
Data recovery is the process of restoring lost data from electronic storage devices. Various methods can be used, but it’s best to avoid the need for recovery by regularly backing up data. In severe cases, a professional data recovery company may be necessary, but this can be costly. Data recovery involves restoring access to data […]
Memory and data storage are two separate entities often confused. Memory, including RAM and ROM, allows quick access to files from the hard drive. Data storage, also called hard disk space, holds permanent information. Virtual memory can be used when RAM is insufficient. Removable storage includes USB sticks and CDs. The terms memory and data […]
Data mining tools extract insights from data, allowing individuals and businesses to make decisions. Common uses include marketing, fraud protection, and surveillance. Standards and ethical implications are established by SIGKDD. KDD is the most widely used tool, while pattern mining and subject-based data mining are used to fight terrorism and in general business practice. Data […]
Data is information that can be processed electronically. Electronic data processing (EDP) is the automated use of technology to process data. EDP coverage is insurance for data processing equipment and data loss. The EDPT is a military exam for computer programming aptitude. Data is information and can include anything from alphanumeric characters to dates, equations, […]
Data breaches occur when unauthorized individuals access electronic or hard copy data. Poor data management, hacking, and theft can cause breaches, ranging from embarrassment to national security threats. Governments require companies to notify customers if a breach occurs. A data breach is a situation where data is inadvertently released or accessed by unauthorized persons. The […]
