TY - JOUR
T1 - Specification preservation in schema transformations - Application to semantics and statistics
AU - Hainaut, Jean-Luc
PY - 1996
Y1 - 1996
N2 - Software design can be modeled as a sequence of transformations applied on initial specifications. In the database domain too, most engineering processes can be described as schema transformations. First, this paper presents a wide spectrum specification model intended to describe data structures at different abstraction levels, and according to the current modelling paradigms. This model includes the representation of statistical data about the instances of the data structures. Then, it defines and discusses the concept of schema transformation. The properties of specification preservation is defined, and applied to two important aspects, namely semantics preservation and statistics propagation. Finally, the impact of the transformational approach on CASE tools is discussed and illustrated by some aspects of DB-MAIN, a representative CASE tool based on this approach.
AB - Software design can be modeled as a sequence of transformations applied on initial specifications. In the database domain too, most engineering processes can be described as schema transformations. First, this paper presents a wide spectrum specification model intended to describe data structures at different abstraction levels, and according to the current modelling paradigms. This model includes the representation of statistical data about the instances of the data structures. Then, it defines and discusses the concept of schema transformation. The properties of specification preservation is defined, and applied to two important aspects, namely semantics preservation and statistics propagation. Finally, the impact of the transformational approach on CASE tools is discussed and illustrated by some aspects of DB-MAIN, a representative CASE tool based on this approach.
KW - database engineering
KW - CASE tools
KW - statistics modelling
KW - schema transformation
KW - wide spectrum data model
M3 - Article
VL - 19
SP - 99
EP - 134
JO - Data & Knowledge Engineering
JF - Data & Knowledge Engineering
IS - 2
ER -