1 An architect is not, or at least should not, be tied to one specific element of expertise. 2  If he or she is focused on only one area, then he or she becomes a subject matter expert and not an architect. 3  This is an important and practical distinction, because technology keeps changing.
An ordered arrangement of data items. A vector is a one dimensional array; a matrix is a two-dimensional array. Arrays are used in myriad applications from basic database processing to scientific simulation. Most programming languages support arrays by providing indexes into the data.
Definition. A matrix is a rectangular array of numbers or other mathematical objects for which operations such as addition and multiplication are defined. Most commonly, a matrix over a field F is a rectangular array of scalars each of which is a member of F.