The major challenges for the tourism industry in the post-COVID era ar.pdf
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The major challenges for the tourism industry in the post-COVID era are associated with developing a high quality staff to better meet changing tourist needs and heightened risk levels within the industry. Explain how the policy formulation process can assist with the mitigation of TWO (2) human resource issues facing the tourism and hospitality industry.20 marks.
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The monthly sales for Yazici Batteries- lnci- were as fotows-Using exp.pdf
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and `posts`. The `posts` table stores both Messages and Stories.
Bear in mind that the application must be able to use these tables to perform the required
functionality outlined below.
Users:
Users can register for the app by supplying their...
- email
- password
- handle (i.e. username).
Messages:
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- Messages are sent from one user to another specific user.
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Write the SQL command to create these tables with the structure you determine is necessary.
### Practice data
Insert realistic-looking dummy data for one thousand Users, one thousand Messages, and one
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### Queries
Write a single SQL query to perform each of the followin tasks:
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1. Create a new Message sent by a particular User to a particular User (pick any two Users for
example).
1. Create a new Story by a particular User (pick any User for example).
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1. Show the 10 most recent visible Messages sent by a particular User to a particular User (pick
any two Users for example), in order of recency.
1. Make all Stories that are more than 24 hours old invisible.
1. Show all invisible Messages and Stories, in order of recency.
1. Show the number of posts by each User.
1. Show the post text and email address of all posts and the User who made them within the last
24 hours.
1. Show the email addresses of all Users who have not posted anything yet.
### Hint
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date and time - this may be useful in determining the number of hours that have passed since a
post was made: `ROUND((JULIANDAY('now') - JULIANDAY('2021-02-21 12:50:00')) * 24)`
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Bear in mind that the application must be able to use these tables to perform the required
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Users:
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- email
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- handle (i.e. username).
Messages:
- Messages consist of text only.
- Messages are sent from one user to another specific user.
- Messages become invisible immediately after view and don't show up in the app thereafter.
- Messages are never actually deleted from the database table, even when invisible to the user
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Stories:
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- Stories are public and every user can see them.
- Stories become invisible 24 hours after posting and don't show up in the app thereafter.
- Stories are never deleted from the database table, even when invisible to the user.
Write the SQL command to create these tables with the structure you determine is necessary.
### Practice data
Insert realistic-looking dummy data for one thousand Users, one thousand Messages, and one
thousand Stories.
Include the practice data in CSV files named `users.csv` and `posts.csv` in the directory named
`data`.
Write the SQLite commands necessary to import the data into the respective tables.
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Write a single SQL query to perform each of the followin tasks:
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example).
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1. Show the 10 most recent visible Messages sent by a particular User to a particular User (pick
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1. Make all Stories that are more than 24 hours old invisible.
1. Show all invisible Messages and Stories, in order of recency.
1. Show the number of posts by each User.
1. Show the post text and email address of all posts and the User who made them within the last
24 hours.
1. Show the email addresses of all Users who have not posted anything yet.
### Hint
The following SQLite code returns the difference in hours between the time now and an earlier
date and time - this may be useful in determining the number of hours that have passed since a
post was made: `ROUND((JULIANDAY('now') - JULIANDAY('2021-02-21 12:50:00')) * 24)`
To see the return value of this command directly (not as part of a comparison operation), use the
following syntax: `SELECT ROUND((JULIANDAY('now') - JULIANDAY('2021-02-21
12:50:00')) * 24);`
.
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