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With an All-Access Pass, you get access to every current and future ITU course. Access over 2,500 hours of on-demand IT Training 24/7. With over 13,000 on-demand training videos and 19,000+ practice questions, you'll have the tools to excel in the critical IT skills needed to elevate your IT Career. Our All-Access pass is available in three affordable plans.
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Definition: Materialized View A materialized view is a database object that contains the results of a query. It is similar to a standard view, which is a virtual table representing the results of a query, except that a materialized view is physically stored on disk, making data retrieval much faster. Materialized views are especially useful …
Definition: Hierarchical Database A hierarchical database is a data management system that organizes data in a tree-like structure. Each record has a single parent, except for the root record, which typically has no parent. This model represents relationships in a one-to-many manner, where a parent node can have one or more child nodes, but each …
Definition: Relational Model The relational model is a framework used primarily for database management where data is stored in tables known as relations. Originally introduced by Edgar F. Codd in 1970, this model organizes data into one or more tables (or “relations”) of columns and rows, with a unique key identifying each row. Rows represent …
Definition: Relational Database Management System (RDBMS) A Relational Database Management System (RDBMS) is a database management system that is based on the relational model introduced by Edgar F. Codd. In an RDBMS, data is structured in database tables, fields, and records. Each table within the database is comprised of one or more data categories in …
What Is a Relational Database Management System (RDBMS)? Read More »
Definition: Object-Oriented Database System (OODBS) An Object-Oriented Database System (OODBS) is a database management system (DBMS) that supports the storage and management of data in an object-oriented programming format. OODBS integrates object-oriented programming principles into database systems, allowing the database to store objects directly as they appear in object-oriented languages such as Java, C++, or …
What Is an Object-Oriented Database System (OODBS)? Read More »
Definition: Object-Relational Database (ORD) An Object-Relational Database (ORD) is a database management system (DBMS) that integrates object-oriented database model features into relational databases. ORDs aim to bridge the gap between relational databases and the object-oriented modeling techniques that are commonly used in programming languages. This type of database supports data types, structures, and behaviors directly …
Definition: External Database An external database is a database that is hosted and maintained outside of an organization’s main system or infrastructure. It can be managed by third-party services, residing on off-site servers, which can be accessed via the internet or other networks. External databases are often used to extend the capabilities of internal systems, …
Definition: Distributed Database A distributed database is a database in which storage devices are not all attached to a common processor. It may be stored in multiple computers, located in the same physical location, or dispersed over a network of interconnected computers. Unlike a centralized database, the distributed database is managed such that it appears …
Definition: Operational Data Store (ODS) An Operational Data Store (ODS) is a database designed to integrate data from multiple sources for additional operations such as reporting, analysis, and auditing, while ensuring that operational systems are not disrupted by these activities. An ODS provides a centralized, integrated, and up-to-date view of an organization’s data that is …
Definition: Lambda Architecture Lambda Architecture is a data-processing architecture designed to handle massive quantities of data by providing a robust method to ingest, process, and analyze data with both a batch and a real-time processing method. This architecture is particularly beneficial in scenarios where both large-scale and real-time analysis need to be merged to provide …
Definition: Routing Table A routing table is a set of rules, often viewed as a table, stored in a router or a networked computer, that lists the routes to particular network destinations. The routing table contains information about the topology of the network immediately around it. The primary function of a routing table is to …
Definition: Log-Structured Merge-tree (LSM-tree) A Log-Structured Merge-tree (LSM-tree) is a data structure primarily used for writing and reading data in write-intensive applications. It is designed to optimize systems that require high write throughput, such as large-scale database management systems and NoSQL databases. The LSM-tree achieves its efficiency by first writing inserts, updates, and deletions to …
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