Answer:
Composite primary key, or simply, composite key
Explanation:
When multiple fields (columns of a table) are combined to form a primary key, the resulting key is called a composite key.
Hope this helps!
Answer:
The correct option is;
A) Device manufacturers store the initial file-system data structures in the device.
Explanation:
Before a storage device can be used for data storage, it is required to prepare the device for use and to make the device to become visible to the operating system by formatting of the device
New storage devices are not pre-formatted or come with a ready to use file system as there are different file systems specifically designed for particular operating systems or operating environment.
Formatting creates partitions, makes the hard drive visible to the operating system and creates a file system that is new such that the storage device can be used for storing files.
Answer:
The answer to the given question is "True".
Explanation:
In computer science, Design is an oriented programming language, that includes text, graphics, style elements, etc. It is used to convert the projection into 3D to 2D which means a three-dimensional to two-dimensional object and uses to display the improve projection.
That's why the answer to this question is "True".
Answer:
The database models depend very much on what will be the use in the business logic of the company will have directly with the database, primarily implying whether or not to use a relational or non-relational database.
Explanation:
In relational databases there is something called normalization, which after the construction of a data model allows me to optimize in a greater way the way in which I will make the queries within this database, that is a fundamental aspect, since one of the fundamental aspects today about the business logic of companies with databases is the capacity to respond when waiting for a query and if it is delayed a lot there will be inconvenience with the expected result.
Currently there are different examples of in which scenario what kind of database is better, distributed, centralized databases, clusters is.. And it is where you need to be very clear about what is my business and what type of database is adapted more to be.
I hope I could help you.
Answer:
false
Explanation:
Based on the information provided within the question it can be said that the statement being made is false. This statement does not exemplify Porter's threat of new entrants, since this talks about the threat of new companies entering the same market with the same product in order to compete with the existing competitors in that market. In this scenario the new companies that eventually made Polaroid Bankrupt had an innovative new technology and which people starting using and left the entire Polaroid Market behind.
