Ask questions which are clear, concise and easy to understand.
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Styles keep your formatting consistent within a document. Themes keep your look and feel consistent across multiple documents. Templates allow you to re-use text, and keep your look and feel consistent across multiple documents
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One-to-One Relationship
Such a relationship exists when each record of one table is related to only one record of the other table.
<i>For example,</i> If there are two entities ‘Person’ (Id, Name, Age, Address)and ‘Passport’(Passport_id, Passport_no). So, each person can have only one passport and each passport belongs to only one person.
One-to-Many or Many-to-One Relationship
Such a relationship exists when each record of one table can be related to one or more than one record of the other table. This relationship is the most common relationship found. A one-to-many relationship can also be said as a many-to-one relationship depending upon the way we view it.
<i>For example,</i> If there are two entity type ‘Customer’ and ‘Account’ then each ‘Customer’ can have more than one ‘Account’ but each ‘Account’ is held by only one ‘Customer’. In this example, we can say that each Customer is associated with many Account. So, it is a one-to-many relationship. But, if we see it the other way i.e many Account is associated with one Customer then we can say that it is a many-to-one relationship.
Many-to-Many Relationship
Such a relationship exists when each record of the first table can be related to one or more than one record of the second table and a single record of the second table can be related to one or more than one record of the first table. A many-to-many relationship can be seen as a two one-to-many relationship which is linked by a 'linking table' or 'associate table'. The linking table links two tables by having fields which are the primary key of the other two tables. We can understand this with the following example.
Example: If there are two entity type ‘Customer’ and ‘Product’ then each customer can buy more than one product and a product can be bought by many different customers.
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Setting up a computer network is a fast and reliable way of sharing information and resources within a business. It can help you make the most of your IT systems and equipment.
Main benefits of networks include:
- File sharing - you can easily share data between different users, or access it remotely if you keep it on other connected devices.
- Resource sharing - using network-connected peripheral devices like printers, scanners and copiers, or sharing software between multiple users, saves money.
- Sharing a single internet connection - it is cost-efficient and can help protect your systems if you properly secure the network.
- Increasing storage capacity - you can access files and multimedia, such as images and music, which you store remotely on other machines or network-attached storage devices.
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the study or use of electronic equipment, especially computers, for collecting, storing and sending out information
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Online transactions:The process where goods or services are bought using credit/debit cards online through an EFT system is called as an online transaction.
It requires a PIN to complete the process.
Websites that allow online transaction:
- Amazon
- Paypal
- Square
- Stripe
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Kunal Chaudhary 3 years, 8 months ago
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