Biometric systems – errors and vulnerabilities
Biometry is a fascinating scientific and engineering field which uses knowledge from a number of diverse scientific fields, such as biology, mathematical statistics, forensics, psychology, security etc.
How to prevent the occurrence of a loop in a hierarchical data structure
Distributed database security – user account maintenance
One of the most important elements of the database security is properly maintaining user accounts, i.e. database users, their passwords, profiles, etc.
How to (not to) use the object-relational capabilities of Oracle DBMS
In the late 80’s and early 90’s of the last century, the first object DBMS systems began to appear, and in the late 90’s the first object-relational DBMS systems.
ORACLE VM (How) to use or not to use?
Cursors of the database in Oracle 11g
Database cursor is a name for a specific private SQL area in which information for processing the specific statement is kept.
HOW TO PREVENT THE “VICIOUS CIRCLE”
Solving a certain type of business rules in the Oracle database
Design by Contract and Oracle PL/SQL
Design by contract is a method whose author is Bertrand Mayer also maker of OOPL language Eiffel, developed in 1980’s.
This paper will present application of DBC methodology in Oracle PL/SQL programming language.
Data replication in Oracle database
Different types of replication mechanism used in Oracle distributed database from version Oracle 7 to Oracle 10g are explained in the lecture.