This is called a key attribute!
There are different types of key attributes!
Primary key is the key that is actually chosen, for example a social security number.
There is also a unique key, say our finger prints! they also uniquely identify humans, but usually we prefer to use social security number when we list people (a unique key could be a primary key if we chose so)
We could also identify people by their social security number and a name, but this is unnecessary, as social security number already gives a full identification. Such a reduntant key is called super key.
Answer:
Explained
Explanation:
Binding is the association of an object with its attributes, operations, or name there are many different types of bindings and bindings can occur at different times
.
for example:
1)language definition time binding: for example-binding * to multiplication
2)language implementation time binding: int size and operations
3)compile time binding: binding type to a variable
for instance in int x; x will be treated as an int from here forward
4)link time binding: binding function name to a specific function definition
5)load time binding: binding variable to memory location
6)run time binding: binding variable to memory location or bind a polymorphic variable to specific class type
.
binding time for the
a)6 run time binding
b)1 language definition time binding
c)2 language implementation time binding
d)5 load time binding
e)4 link time binding
f)3 compile time binding
g)3 compile time binding:
h)6 run time binding
Answer:
Explanation:
Freeware and shareware programs are softwares which are either free of charge or consist of a free version for a certain trial period. These programs pose a threat of habouring malware or viruses which could damage one's computer and important files and programs. Therefore, it is imperative that carefulness is maintained when trying to get these softwares.
Some of the necessary safety conditions that should be taken include;
1) Appropriate research about the software including taking more about the vendors and reviews.
2.) Once, a healthy review has been identified ; the download can begin with the Downloader ensuring that the download is from the recommended site.
3) Prior to installation the software should be scanned with an active anti-virus program to determine if there is possibility that a virus has creeped in.
4.) Some softwares may require that computer anti-virus be turned off during installation, this is not always a good idea as this act leaves the system vulnerable a d badly exposed.
Answer:
last known good configuration
Explanation:
If you're having difficulties starting Windows, the Last Known Good Configuration, or LKGC for short, is a technique to get it started. It loads the drivers and registry data from the last time you began and shut down your computer successfully.
