student | java swing | Application Framework library

so I'm struggling with these things:

I have method that returns istream input and takes istream input as a parameter, sends values to vector and stores them in it. Now, when I've entered 1 value, I'm trying to make a check if vector already contains that value, here is my code to understand it better:

Sorry if this is a noob question!

I have two tables - a movie and a comment table.

I am trying to return output of the movie name and each comment for that movie as long as that movie has more than 1 comment associated to it.

Here are my tables

I'm using NGXS to implement the state management in my Angular project, and the states are updated by the WebSocket, a plugin of NGXS

What I implemented:

model.ts

I'm a student learning about database design and currently learning about the relationships of - one-to-one, one-to-many, many-to-many. I understand the concept well enough, but feel like I'm lacking experience/information on how it would be implemented in a real production scenario.

My question is this

If I have a blog website with a Blog Post as an entity and comments for each blog post, how would you handle the comments in the database?`

Would you use a one-to-many relationship and just store all the comments in a single table. Then link those comments to each blog post and user who created it?

What if each comment had a sub-comment? Would you create a separate table for sub-comments and link it to a single comment? Would that cause too much overhead and confusion within the DB itself?

I get the concepts and all, but don't understand best practices for handling what seems like basic stuff.

Thanks in advance!

I have a text file called listofhotelguests.txt where hotelguests are stored line by line with their first names separated by && as a delimiter. Can someone explain how I can have my Python program read it so it associates john with doe, ronald with macdonald, and george with washington?

My expected outcome I'm hoping for is if I prompt the user for their lastname to make sure their a valid guest on the list, the program will check it against what it has in the file for whatever the firstname they entered earlier was.

So if someone enters george as their first name, the program retrieves the line where it has george&&washington, prompts the user to enter their lastname and if it doesn't match what it has, either say it matches or doesn't. I can figure the rest out later myself.

Assuming there is nobody with the same names.

I know I have to split the lines with &&, and somehow store what's before && as something like name1 and whats after && as name2? Or could I do something where if the firstname and lastname are on the same line it returns name1 and password1?

Not sure on what to do. Python is one of my newer languages, and I'm the only CS student in my family and friend groups, so I couldn't ask anybody else for help. Got nowhere by myself.

Even just pointing me in the direction of what I need to study would help immensely.

Thanks

Here's what the text file looks like:

I have a table which stores student admission details and the admission date. Admission Date is bifurcated into multiple rows and I would like to combine the values from the three rows into a single row.

While trying to create show my students on Laravel 8, I met with some errors, first it wasn't creating the students, then I get errors on /students/ page

Attempt to read property "country_name" on null

index.blade.php

This code is incorrect. Redirect only redirects, I don't think you can pass results through it.

I want to display list of student grade details like below