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Design a course management database by creating the following table:

1. student (regno, name, address, age)
2. course (cno, cname, fees, fno)
3. enroll (regno, cno, edate)
4. faculty (fno, fname, specialization)

Problems

1. Create tables using the above relation schema by taking suitable data type and with appropriate constraints
2.  Insert 5 rows each to these tables of your choice. 
3.  Write SQL queries to meet the following demand
   1. List all those students who are greater than 18 years of age and have opted for "DBMS" course.
   2. List all those courses whose fee is greater than that of "DBMS" course.
   3. Find the list of students who have enrolled to the course "DBMS" after a date
   4. Find all those faculty members who have not offered any course.
   5. List all faculties who teach a student "John".

Comment your answer here.

List here some of the features of PHP7

if(isset($_POST['submit'])){
    $search_data = $_POST['search_data'];
}
$query = "SELECT * FROM answers WHERE tags LIKE '%$search_data%' ";

Notice: Undefined variable: search_data in C:\xampp\htdocs\billing\users\menu.php on line 20

Pls add your solutions in the comments

• HTML
• CSS
• PHP
• None 

1. Hacking
2. Trojan Horse
3. Denial of Service attack
4. Phishing

Write a C program to find Sum of Two Numbers

1. Pamir
2. Karakoram
3. Aksaichin
4. Godwin Astin

1. Thattekad
2. Agastya Mountain Region
3. Silent Valey
4. Chinnar

1. bits per minute
2. bytes per minute
3. bits per second
4. bytes per second

1. Transfer Control Protocol/Internal Protocol
2. Transfer Control Protocol/Internet Protocol
3. Transmission Control Protocol/Internal Protocol
4. Transmission Control Protocol/Internet Protocol

Comment your answer with an explanation. This is the PSC question asked in PSC 2019 Examination

I am new to dart. I have a question regarding the code.

    List<String> names = new List<String>();
    It can type the same as,
    var names = <String>[];

so what's the difference between the codes?
 

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Eample: import 'package:http_dart/http.dart' as http;

Can't we simply import the package and use the class directly instead of writing http.get("www.facebook.com")  ?

Which state management is easy and best to learn?

I want to learn state management. Which state management is easy and best to learn?

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     No named parameter with the name 'visualDensity'.

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Anyone pls help me to create a program in flutter. I have installed Android Studio, Flutter and Dart Plugins. Iam familiar with object-oriented code and basic programming concepts such as loops conditions etc.

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I am currently using this image picker configuration to reduce the weight of my photos:

final pickedFile = await picker.getImage(source: imageSource, maxHeight: 100, maxWidth: 100, imageQuality: 75,);

the problem is that when I access the photos, they obviously show with very low resolution. Is there any way to return the procedure to show images with their normal resolution? 

Execution failed for task ':image_picker:javaPreCompileDebug'.
> Could not resolve all files for configuration ':image_picker:debugCompileClasspath'.
   > Could not find core.jar (androidx.core:core:1.1.0).
     Searched in the following locations: