Converting Relational Databases into Object-relational Databases.
نویسندگان
چکیده
منابع مشابه
Converting Relational Databases into Object-relational Databases
ion (abs): A super-class is abstract (i.e., abs := true) when all of its objects are members of its sub-type objects. Instances of an abstract type cannot appear in the database extension, but are subsumed into instances of its sub-types. Attributes (Acdm): A class C has a set of attributes Acdm. Acdm := {a | a := 〈an, t, tag, l, n, d〉}, where each attribute a has a name an, data type t and a t...
متن کاملTransform More Semantics from Relational Databases into Object-Oriented Databases
OSAM* is an object-oriented semantic data model for advanced applications such as CIMS, knowledge processing system[l2]. For its strongly modeling capability of both object-oriented data models and semantic data models, OSAM*-based h&zogeneous distPribnted dat,abnse systems have been developed such as IMDAS[8] and CIMBASE[14]. In the two syaterns, OSAM* is used as the common data model, and two...
متن کاملRelational Databases Query Optimization using Hybrid Evolutionary Algorithm
Optimizing the database queries is one of hard research problems. Exhaustive search techniques like dynamic programming is suitable for queries with a few relations, but by increasing the number of relations in query, much use of memory and processing is needed, and the use of these methods is not suitable, so we have to use random and evolutionary methods. The use of evolutionary methods, beca...
متن کاملObject Database vs. Object-Relational Databases
When you don't know where you want to go, any road will take you there. Users need to understand the differences between object database management systems and the newer object relational database management systems (ORDBMSs). ORDBMSs will support some of the object extensions needed by today's more complex applications. Because of the relative size of the RDBMS vendors' marketing infrastructur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Object Technology
سال: 2010
ISSN: 1660-1769
DOI: 10.5381/jot.2010.9.2.a3