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2. Outline of databases - Wikipedia

   en.wikipedia.org/wiki/Outline_of_databases

   The following is provided as an overview of and topical guide to databases: Database – organized collection of data, today typically in digital form. The data are typically organized to model relevant aspects of reality (for example, the availability of rooms in hotels), in a way that supports processes requiring this information (for example, finding a hotel with vacancies).

3. DBM (computing) - Wikipedia

   en.wikipedia.org/wiki/DBM_(computing)

   The original dbm library and file format was a simple database engine, originally written by Ken Thompson and released by AT&T in 1979. The name is a three-letter acronym for DataBase Manager, and can also refer to the family of database engines with APIs and features derived from the original dbm.

4. Relational database - Wikipedia

   en.wikipedia.org/wiki/Relational_database

   RDBMS is an extension of that initialism that is sometimes used when the underlying database is relational. An alternative definition for a relational database management system is a database management system (DBMS) based on the relational model. Most databases in widespread use today are based on this model. [24]

5. Object–relational database - Wikipedia

   en.wikipedia.org/wiki/Object–relational_database

   An object–relational database (ORD), or object–relational database management system (ORDBMS), is a database management system (DBMS) similar to a relational database, but with an object-oriented database model: objects, classes and inheritance are directly supported in database schemas and in the query language.

6. Centralized database - Wikipedia

   en.wikipedia.org/wiki/Centralized_database

   It is composed of multiple database files, all controlled by a central DBMS. The main differences between centralized and distributed databases arise due to their respective basic characteristics. Differences include but are not limited to: Centralized databases store data on a single CPU bound to a single certain physical/geographical location.

7. Document-oriented database - Wikipedia

   en.wikipedia.org/wiki/Document-oriented_database

   The central concept of a document-oriented database is the notion of a document.While each document-oriented database implementation differs on the details of this definition, in general, they all assume documents encapsulate and encode data (or information) in some standard format or encoding.

8. Free tax filing with IRS Direct File: What you need to know - AOL

   www.aol.com/finance/free-tax-filing-irs-direct...

   The IRS Direct File program, which lets taxpayers file their federal income tax return directly with the IRS for free, is doubling its reach to 25 states for the 2025 tax season, up from 12 states ...

9. Federated database system - Wikipedia

   en.wikipedia.org/wiki/Federated_database_system

   A DBMS can be classified as either centralized or distributed. A centralized system manages a single database while distributed manages multiple databases. A component DBS in a DBMS may be centralized or distributed. A multiple DBS (MDBS) can be classified into two types depending on the autonomy of the component DBS as federated and non federated.