Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Having produced a conceptual data model that users are happy with, the next stage is to translate this into a schema that implements the relevant data structures within the database. This process is often called logical database design, and the output is a logical data model expressed in the form of a schema. Whereas the conceptual data model is (in theory at least) independent of the choice of database technology, the logical data model will be expressed in terms of a particular database model supported by the chosen DBMS. (The terms data model and database model are often used interchangeably, but in this article we use data model for the design of a specific database, and database model for the modelling notation used to express that design.)
A conceptual data model in separate from the choice of what?
A: database technology

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Calvin Veltman undertook, for the National Center for Education Statistics and for the Hispanic Policy Development Project, the most complete study of English language adoption by Hispanophone immigrants. Mr Veltman's language shift studies document high bilingualism rates and subsequent adoption of English as the preferred language of Hispanics, particularly by the young and the native-born. The complete set of these studies' demographic projections postulates the near-complete assimilation of a given Hispanophone immigrant cohort within two generations. Although his study based itself upon a large 1976 sample from the Bureau of the Census (which has not been repeated), data from the 1990 Census tend to confirm the great Anglicization of the US Hispanic American origin population.
What demographics did Veltman exclude from the study?
A: unanswerable

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In Mesoamerica, a similar set of events (i.e., crop domestication and sedentary lifestyles) occurred by around 4500 BC, but possibly as early as 11,000–10,000 BC. These cultures are usually not referred to as belonging to the Neolithic; in America different terms are used such as Formative stage instead of mid-late Neolithic, Archaic Era instead of Early Neolithic and Paleo-Indian for the preceding period. The Formative stage is equivalent to the Neolithic Revolution period in Europe, Asia, and Africa. In the Southwestern United States it occurred from 500 to 1200 C.E. when there was a dramatic increase in population and development of large villages supported by agriculture based on dryland farming of maize, and later, beans, squash, and domesticated turkeys. During this period the bow and arrow and ceramic pottery were also introduced.
What hunting weapon was found in the Southwestern US during  500 to 1200 C.E.?
A: bow and arrow

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Other common forms include president of the council of ministers (for example in Italy, Presidente del Consiglio dei Ministri), President of the Executive Council, or Minister-President. In the Scandinavian countries the prime minister is called statsminister in the native languages (i.e. minister of state). In federations, the head of government of subnational entities such as provinces is most commonly known as the premier, chief minister, governor or minister-president.
What is the Italian term for the prime minister?
A:
president of the council of ministers