Random access (more precisely and more generally called direct access) is the ability to access an arbitrary element of a sequence in equal time or any datum from a population of addressable elements roughly as easily and efficiently as any other, no matter how many elements may be in the set. In computer science it is typically contrasted to sequential access which requires data to be retrieved in the order it was stored.

Open access (OA) is a set of principles and a range of practices through which research outputs are distributed online, free of access charges or other barriers. With open access strictly defined (according to the 2001 definition), or libre open access, barriers to copying or reuse are also reduced or removed by applying an open license for copyright.

1. <database> A relational database running under {Microsoft Windows}. Data is stored as a number of "tables", e.g. "Stock". Each table consists of a number of "records" (e.g. for different items) and each record contains a number of "fields", e.g. "Product code", "Supplier", "Quantity in stock". Access allows the user to create "forms" and "reports". A form shows one record in a user-designed format and allows the user to step through records one at a time. A report shows selected records in a user-designed format, possibly grouped into sections with different kinds of total (including sum, minimum, maximum, average). There are also facilities to use links ("joins") between tables which share a common field and to filter records according to certain criteria or search for particular field values. Version: 2 (date?). Usenet newsgroup: news:comp.databases.ms-access. 2. <communications> A communications program from Microsoft, meant to compete with ProComm and other programs. It sucked and was dropped. Years later they reused the name for their database. [Date?] (1997-07-20)

In music, an accidental is a note of a pitch (or pitch class) that is not a member of the scale or mode indicated by the most recently applied key signature. In musical notation, the sharp (), flat (), and natural () symbols, among others, mark such notes—and those symbols are also called accidentals.

An open-access mandate is a policy adopted by a research institution, research funder, or government which requires or recommends researchers—usually university faculty or research staff and/or research grant recipients—to make their published, peer-reviewed journal articles and conference papers open access (1) by self-archiving their final, peer-reviewed drafts in a freely accessible institutional repository or disciplinary repository ("Green OA") or (2) by publishing them in an open-access journal ("Gold OA") or both.

Microsoft Access