Secondary key science projects include radio transient detection and monitoring, solar burst imaging, studies of ionospheric phenomena, and a variety of astronomical studies using all-sky survey data.
12.
This feature makes secondary key look-ups operate much like keyed inquiries of any other database system : requiring at least two disk reads ( a key read then a data-record read ).
13.
The department code may not be unique; it may also be indexed, in which case it would be considered a " secondary key ", or " alternate key ".
14.
Prototypically the'tutti exposition'does not feature the soloist ( except, in early classical works, in a'continuo'role ), and does not contain the decisive sonata-exposition modulation to the secondary key.
15.
Some versions of IDMS subsequently included the ability to define indexes : either record indexes, allowing records to be located from knowledge of a secondary key, or set indexes, allowing the members of a set to be retrieved by key value.
16.
The tonal layout of sonata form has frequently been described by theorists, and involves a motion from the tonic to a secondary key in the exposition, answered by a return and solidification of the tonic later in the piece ( usually in the recapitulation ).
17.
Although Go & major is usually notated as the enharmonic key of Am & major, because Am & major has only four flats as opposed to Go & major's eight sharps ( including the F ), it does appear as a secondary key area in several works in sharp keys-most notably in the Prelude and Fugue in C-sharp major from Johann Sebastian Bach's " The Well-Tempered Clavier ", Book 1.
18.
The MC is often triggered by repeated, declamatory ( " hammer blow " ) chords and follows either a half cadence or authentic cadence in the tonic or secondary key . ( The first level default is to build an MC around a half cadence in the new key; by far the least common option is to set the MC up by an authentic cadence in the tonic . ) This moment of punctuation serves one purpose : to announce the impending arrival of the sonata's secondary theme.
