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zalisa [80]
3 years ago
10

Explain what middleware is. Name a common middleware in two-tier client/server architecture for database applications.

Computers and Technology
1 answer:
sleet_krkn [62]3 years ago
7 0

Answer: Middleware is a program that acts as the middle connection for a client and server .It helps the client and server to connect with each other for sending the request,  communication, etc. Middleware is designed in such a way that the functioning does not gets noticed by the client and server.

Example- Two-tier architecture of the client and server for database application can be the train ticket reservation. The reservation made by a people will be according to the time , the person who gets chance to access the reservation first will get the ticket while others wait in queue.

If any query regarding the reservation according to the database occurs then Java Database connectivity (JDBC) will act as the middleware for the Java data collection between the application(client section) and database (server).

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A computing company is running a set of processes every day. Each process has its own start time and finish time, during which i
Helga [31]

Answer:

Above all else, let us show that this issue has the greedy choice property.

This implies that worldwide ideal arrangement can be gotten by choosing local ideal arrangements. Presently notice the following:

The global optimal solution of the issue requests us to track down the minimum number of times process_check module should be run.

It is likewise referenced that during each running interaction, process_check module should be called atleast once. Along these lines, the minimum possible number of process_check calls happens when process_check is made close to the quantity of the processes that are run.

Along these lines, we see that the global optimal solution is shaped by choosing optimal answer for the nearby advances.

Along these lines, the issue shows greedy choice property. Thus, we can utilize a greedy algorithm for this issue.

The greedy step in this calculation is to postpone the process_check as far as might be feasible. Thus, it should be run towards the finish of each interaction. So the following algorithm can be utilized:

Sort the cycles by utilizing the completion times.

Towards the finish of the 1st process in the arranged list, run the process_check module. Right now any process that is now running is removed the arranged rundown. The main interaction is additionally removed from the sorted list.

Now repeat stage 2, till all processes are finished.

In the above mentioned algorithm, the costliest advance is the step of sorting. By utilizing the optimal sorting algorithm, for example, merge sort, we can achieve it in O(n log n) asymptotic time.

Along these lines, this greedy algorithm additionally takes O(n log n) asymptotic time complexity.

5 0
3 years ago
3. Q3: India is a user who needs to be able to see a list of the names of her friends (those whom she considers friends). There
Katyanochek1 [597]

In order to grant India access to a list of her friends, you should use a query by selecting name from person and use the inner join relationship on person.

<h3>What is query?</h3>

A query refers to a computational request for data that are saved in a database table, from existing queries, or even from a combination of both a database table and existing queries.

In this scenario, you can grant India access to be able to see a list of her friends with a structured query language (SQL) by selecting name from person and use the inner join relationship on person.

Read more on query here: brainly.com/question/25266787

3 0
2 years ago
Advantages of python programming language
Sauron [17]

Answer:

Great starter programming language. Overall very powerful but for beginners the more advanced characteristics like GUIs are too complicated. This is coming from personal experience and after first experiencing programming through Python, Javascript is my new favorite.

Explanation:

a great video by code camp titled "Learn Python - Full Course for Beginners [Tutorial]" is a great starting point!

6 0
3 years ago
You recently started working part-time in a retail store, and are learning about the reading devices your store uses.Your store
slega [8]

Answer:

Laser beams.

Explanation:

Recently, that user has began functioning part-time in such a retail outlet, as well as he discovering regarding his shop's learning tools. During checkout, his shop requires the code scanner to scan objects.  

The barcode scanner uses laser beam technologies because the laser beam is rapidly running over the QR code or barcode back-and-forth, or executing the sequence. The sensors well into the system display the mirrored beam patterns that decrypts the barcode.

So, the following are the reason that describes the answer is correct according to the scenario.

5 0
3 years ago
____ is (are) the abuse of e-mail systems to send unsolicited e-mail to large numbers of people.
Volgvan
Pretty sure answer is <span>E-mail spam</span>
4 0
3 years ago
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