Reading Timer

Auto count the content reading time and display it to your readers with a very simplified Reading Timer feature. Note that the estimated time is based on the standard value.

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Sohanur Rahman

Entities and Attributes:

Designing a database schema for an online merchandise store involves multiple components to manage products, customers, orders, and more. Below is a simplified schema to get you started. Please note that real-world scenarios may require more complex structures and additional considerations.


  • Products have a one-to-many relationship with Categories.
  • Customers have a one-to-many relationship with Orders.
  • Orders have a one-to-many relationship with Order Items and Payment Transactions.
  • Products have a many-to-many relationship with Cart through Cart Items.
  • Customers have a one-to-one relationship with Cart.


  • Implement proper indexing on frequently queried fields (e.g., product_id, customer_id, order_id) for better performance.
  • Use foreign keys to maintain data integrity.
  • Incorporate appropriate data types for each attribute (string, integer, date, etc.).
  • Normalize the database to minimize redundancy and maintain consistency.
  • Handle security considerations, such as hashing sensitive data like passwords and protecting against SQL injection.
  • Depending on the platform’s complexity, you might need to consider additional tables for things like product reviews, shipping methods, discounts, etc.

Remember, this is a basic outline, and a real-world application might require more in-depth design and optimization based on your specific requirements and the scale of the application.

Explain Nostalgia:

Alright, little buddy! Imagine you have a special toy that moves really fast without needing any push. It’s like magic! Well, superconductors are like those special toys, but for electricity.

You know how when you play with your toy cars, they might slow down and stop because of things like friction? Well, when electricity goes through regular wires, it also faces something like friction, which makes it harder for the electricity to flow, and that’s why sometimes we lose a bit of energy.

But guess what? Superconductors are like the superhero versions of wires! They don’t have any of that friction. So, when you send electricity through them, it just keeps going and going without slowing down at all. It’s like the electricity is dancing happily without getting tired.

People who study these things are really excited about superconductors because they can help save a lot of energy and make cool things like superfast trains and super powerful magnets. So, superconductors are special materials that let electricity flow without any bumpiness, just like your toy car zooms around without stopping!

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