Hierarchical Relationship Between Serializability Classes
The following expressions illustrate the hierarachical (containment) relationships between serializability and recoverability classes:
- Serial ⊂ commitment-ordered ⊂ conflict-serializable ⊂ view-serializable ⊂ all schedules
- Serial ⊂ strict ⊂ avoids cascading aborts ⊂ recoverable ⊂ all schedules
The Venn diagram (below) illustrates the above clauses graphically.
Read more about this topic: Schedule (computer Science)
Famous quotes containing the words hierarchical, relationship and/or classes:
“Authority is the spiritual dimension of power because it depends upon faith in a system of meaning that decrees the necessity of the hierarchical order and so provides for the unity of imperative control.”
—Shoshana Zuboff (b. 1951)
“The relationship between mother and professional has not been a partnership in which both work together on behalf of the child, in which the expert helps the mother achieve her own goals for her child. Instead, professionals often behave as if they alone are advocates for the child; as if they are the guardians of the child’s needs; as if the mother left to her own devices will surely damage the child and only the professional can rescue him.”
—Elaine Heffner (20th century)
“Genocide begins, however improbably, in the conviction that classes of biological distinction indisputably sanction social and political discrimination.”
—Andrea Dworkin (b. 1946)