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README.md
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README.md
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@ -2,7 +2,7 @@
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> Krusty Kookies is a bakery which specializes in cookies, and they need a database to keep track of their production and deliveries.
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> Krusty Kookies is a bakery which specializes in cookies, and they need a database to keep track of their production and deliveries.
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### Base tables
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## Base tables
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Unsuprisingly, we will need a cookie table.
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Unsuprisingly, we will need a cookie table.
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@ -90,13 +90,6 @@ This suggests that we may need to relate pallets to customers via a truck entity
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Again, the truck as an entity is irrelevant and we only need a table to keep track of what pallet was delivered to what customer along with a date.
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Again, the truck as an entity is irrelevant and we only need a table to keep track of what pallet was delivered to what customer along with a date.
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```sql
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```sql
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CREATE TABLE deliveries (
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delivery_id INT PRIMARY KEY,
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pallet_id INT NOT NULL,
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customer_name VARCHAR(50) NOT NULL,
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delivery_date DATE NOT NULL DEFAULT CURRENT_DATE CHECK (delivery_date >= CURRENT_DATE),
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FOREIGN KEY (pallet_id) REFERENCES pallets(pallet_id)
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);
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```
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```
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> Orders must be registered in the database, and, for production planning purposes, the company must be able to see all orders which are to be delivered during a specific time period.
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> Orders must be registered in the database, and, for production planning purposes, the company must be able to see all orders which are to be delivered during a specific time period.
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@ -124,8 +117,12 @@ This should all be possible with a simple join query.
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> Blocked products are of special interest. The company needs to find out **which products are blocked**, and also which pallets contain a certain blocked product.
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> Blocked products are of special interest. The company needs to find out **which products are blocked**, and also which pallets contain a certain blocked product.
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As well as:
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> Finally, they must be able to check **which pallets have been delivered** to a given customer, and the date and time of delivery.
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> Finally, they must be able to check **which pallets have been delivered** to a given customer, and the date and time of delivery.
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And:
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> Orders must be registered in the database, and, for production planning purposes, the company must be able to see all orders which are to be **delivered during a specific time period**.
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> Orders must be registered in the database, and, for production planning purposes, the company must be able to see all orders which are to be **delivered during a specific time period**.
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These are all trivial queries.
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These are all trivial queries.
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