-Access to a file depends on its structure i.e. adding customer date-of-birth field to customer file require the five steps described in slide 29. the reason for this is that the file structure is coded within the program
-Changes in database structure affect program's ability to access data i.e. changing field from integer to decimal required changes in all the files. the reason for this is that the file data characteristics are coded within the program.
Data dependency in DBMS refers to the relationship between different data elements within a database. There are three main types: functional dependency (one attribute determines another), partial dependency (part of a composite key determines other attributes), and transitive dependency (dependency between non-key attributes). Understanding data dependencies is crucial for database normalization and maintaining data integrity.
It is like a dependent variable it is just a variable alone.
difference between Data Mining and OLAP
difference between serch data structure and allocation data structure
The scope of work and the educational requirements are the difference between data communication and data communication information.
Exchanging data between systems with no dependency on software platforms and other incompatibility issues.
The difference between primary data and secondary data is that primary data is the information from the original research.
Coupling is a measure of the relationship or dependency between two modules. Data Coupling occurs between two modules when data is passed by parameters using a simple argument list and every item in the list is used.
Coupling is a measure of the relationship or dependency between two modules. Data Coupling occurs between two modules when data is passed by parameters using a simple argument list and every item in the list is used.
Expalain the difference between cyclical and seasonal variations in a data series?
What is the difference between data communication and telecommunication ?
data-wee explanation-poo