Answer:
QR code
Explanation:
QR Code. Short for quick response code, which can also be called 2-D bar code, a QR code is a type of two-dimensional (2D) barcode that are read with the aid of a QR barcode reader or a camera-enabled smartphone with an inbuilt or installed QR reader software.
A QR code is capable of carrying information in both the vertical and the horizontal direction, which is the reason behind the name 2D barcode.
Answer:
April 30, 1993
Explanation:
On April 30, 1993, four years after publishing a proposal for “an idea of linked information systems,” computer scientist Tim Berners-Lee released the source code for the world’s first web browser and editor.
The answer & explanation for this question is given in the attachment below.
Answer:
d. involves analyzing end-user business requirements in order to refine project goals
Explanation:
In the software development life cycle, the implementation stage is the stage where the computer programmers begin the actual coding of the application required by the end-user. At this stage, the developer takes into account the needs and specifications of the customer.
For example, if the end-user wants a software application that can track payment records, the researcher at this stage begins using the right software to code programs that can effect this function.
This is about identifiers in a record referring to other records.
You can have many to one, one to one, many to many.
E.g., if you have two tables, Authors and Books, then a book record could have a reference to an author record. Since an author can write many books, this would be a many-to-one relationship.
