NESTING BLOCKS

• band: physical area on disk
• bit: the "atomic" piece of data, as in 1/0, on/off
• byte: often 8 bits long, representing a character/symbol
• field: aka metadata data, column headings; a string of bytes containing a specific type of info, e.g. a "last name field"
• record: a collection of fields describing a single entity. e.g. lname, fname, & address (the fields) for one individual.
• file: a bunch of records, all of which have similar types of information.
• program: a type of file, but contains "lines of code" (computer instruction) instead of data.
• database: a collection of data files and programs
• info system: a process using a database and human interaction designed to perform a function
• enterprise model: a conceptual architecture of interlocking systems within an enterprise. aka application portfolio