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System Unit

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  What is a System Unit? A system unit is the part of a computer that houses the primary devices that perform operations and produce results for complex calculations . Includes the motherboard, CPU, RAM, and other components. Examples of components: 1. Motherboard The main circuit board of micro computer.  Also known as the main board or system board.  2.  CPU The central electronic chip that determines the processing power of the computer. 3. Memory Temporarily store application, documents and system operating information. 4. Random Access Memory (RAM) Store data and instruction that are used by the CPU to perform some tasks.
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Database

  What is a database? A database is an organized collection of data stored and accessed electronically.  Small databases can be stored on a file system while large databases are hosted on computer clusters or cloud storage. Table in a database  A table is a collection of related data held in a table format within a database.  Data is logically organised in a row-and-column format similar to a spreadsheet. Query in database Query can either be a request for data results from the database or for action on data, or both.  It gives an answer to a simple question, perform calculations, combine data from differents tables, add change, or delete data from database.  There are two common types of database queries that are select queries (retrieves data and allows you to view it) and action queries (allows you to perform a task related to the data) .  Form in database A form in access is a database object that you can use to create a user interface for a dat...
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