A number of texts signify that the most important aspects offered by a DBMS are availability, integrity and secrecy. As part of a homework assignment I have been tasked with mentioning attacks which ...
Given the following question, I'd be glad if someone could help me. Take the following relational schemes: R(A, B , C) S(D, E, F) where A and D attributes are the primary keys. Assume to ...
I have "1 <-> 0..1 relationship". For example: There is a set of users. Some users are customers. Thus we have two tables: the table users and the table customers. What is the best way to ...
For a University course I've been given the following task Suppose that we have an employee table like (first_name, last_name, salary, hire_date, ...). There is regulation which states that every ...