A programming language that supports relational databases is SQL (Structured Query Language)
Structured Query Language (SQL), is the principal method for communicating with Relational Databases.
A relational database is a group of data elements that are linked together by predefined connections. These elements are laid up in the form of a series of tables containing columns and rows.
- Tables are utilized for storing data about the items that will be displayed in the database.
- A column in a database contains a specific type of data, whereas a field records the actual value of an attribute.
- The table's rows indicate a collection of linked values for a single item or entity.
Each entry in a database can be assigned a unique identity known as a primary key, and rows from other tables can be linked together via foreign keys. This data may be accessible in a variety of ways without having to reorganize the database tables itself.
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Answer:
The main cause of lack of jobs is due to automation and the ability for computers to do everything faster, more efficiently and effectively.
Explanation:
A specific example - Data entry jobs are redundant from automation programs
- Economic Forum predicted a net increase of 58 million jobs for automation, so this accounts for losses but isn't case specific to data entry
Answer:
(d) if (radius > 0) System.out.println(radius * radius * 3.14159);
Explanation:
Given
Code segment (a) to (d)
Required
Which is correct
Code segment (a): radius <=0
This means that radius is 0 or less, i.e. 0 or negative
Code segment (b): radius !=0
This means that radius is not equal to 0 i.e. it could be positive or negative but definitely not 0
Code segment (c): radius >=0
This means that radius is 0 or greater, i.e. 0 or positive
Code segment (d): radius >0
This means that radius is greater than 0 i.e. positive
<em>Hence, (d) is correct</em>
A hypothetical company that needs an information system is Memphis drilling and construction company.
<h3>What is the size of a project?</h3>
This is known to be the the number of firms taking part in the project and thus in the case above, it is small project.
In terms of Staff/experts availability, there are experts from the mining industry with years of experience, soil survey analyst as well as other minor staff.
In terms of System level of criticality, it is big because the extent to drilling will make use of the information system and other major decisions made.
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