A data model explicitly determines the structure of data. Data models are specified in a data modeling notation, which is often graphical in form. A data model can be sometimes referred to as a data structure, especially in the context of programming languages. Data models are often complemented by function models, especially in the context of enterprise models.
The Association Montessori Internationale (AMI), founded by Maria Montessori in 1929, maintains Montessori educational principles and disseminates Montessori education throughout the world.
Andrea Amati (1500-1577) laid the basis of modern violin-making. See Italian luthiers. Dante Alighieri commonly known as Dante, was an Italian poet who greatly influenced generations of poets and authors throughout the centuries, such as Byron, Geoffrey Chaucer and William Blake.