equivalent keys
21Public-key cryptography — In an asymmetric key encryption scheme, anyone can encrypt messages using the public key, but only the holder of the paired private key can decrypt. Security depends on the secrecy of that private key …
22Relational database — A visual diagram showing the relationship between the two tables, as indicated by the arrow A relational database matches data by using common characteristics found within the data set. The resulting groups of data uses the relational model (a… …
23Wireless security — An example wireless router, that can implement wireless security features Wireless security is the prevention of unauthorized access or damage to computers using wireless networks. Many laptop computers have wireless cards pre installed. The… …
24Dvorak Simplified Keyboard — The modern Dvorak Simplified Keyboard (US layout) Typing a text excerpt at 115 WPM with the Canadian French Dvorak keyboard layout. The Dvorak Simplified Keyboard is a k …
25Andalusian cadence — Andalusian cadences are common in Flamenco music. The Andalusian cadence is a term adopted from flamenco music for a chord progression comprising four chords descending stepwise.[1] It is otherwise known as the minor descending tetrachord …
26performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
27wind instrument — /wind/ a musical instrument sounded by the breath or other air current, as the trumpet, trombone, clarinet, or flute. [1575 85] * * * ▪ music Introduction any musical instrument that uses air as the primary vibrating medium for the… …
28Augmented sixth chord — The interval of an augmented sixth normally resolves outwards by semitone to an octave.  Play (help·info) …
29Windows Registry — The Windows Registry is a hierarchical database that stores configuration settings and options on Microsoft Windows operating systems. It contains settings for low level operating system components as well as the applications running on the… …
30Key signature — For use in cryptography, see Key signature (cryptography). Key signature A major / F♯ minor with three sharps placed after the clef. In musical notation, a key signature is a series of sharp or …
