Answer: Interface methods, interface variables and interface markers.
Explanation:
Interface methods are public and abstract by default.
Interface variables can be declared public, static and final
Marker interfaces are simply empty interfaces without any methods.
Answer:D
Queries are always saved and can therefore be run on the most up-to-date database information
Answer:
0.444
Explanation:
Formula for slope = (X2 - X1)/(Y2 - Y1)
X1 =100
X2 = 500
Y1 = 1000
Y2 = 10000
Slope = (500 - 100)/(10000 - 1000)
=400/9000
=4/90
=0.04444
Number of bill(X axis) against sales (Y axis)
The stage that precedes the implementation stage of SDLC is <u>testing</u> and it involves checking the functionality of the system.
System design involves the process of determining an overall system architecture, which typically comprises the following:
- Physical processing components.
Generally, there are seven (7) main stages in the systems development life cycle (SDLC) model and these include:
1. Planning.
2. Analysis.
3. Design.
4. Development.
5. Testing.
6. Implementation.
7. Maintenance.
From the above, we can deduce that the stage which precedes the implementation stage of SDLC is testing.
During the testing stage of SDLC, a quality assurance (QA) expert checks the system to determine whether or not it is functioning properly before it is deployed for operation, which is where the system can be used.
Read more: brainly.com/question/20813142
There can be several reasons why the user is not able to delete a file on the NTFS Volume or disk partition of the computer. Possible scenarios are as follows.
1. The user does not have sufficient permission to perform the task as the file itself may not be owned with the user. The best way is to make sure the user is an administrator.
2. The file is corrupted which prevents to properly access, running a chkdsk will help to validate with this.
3. Another common scenario is that the file is actually currently in use.
