CTRL+P. It's usually pressed when you want to print something.
Explanation:
Both Primary Key and Candidate Key are the attributes that are used to access tuples from a table. These (Primary key and Candidate key) are also can be used to create a relationship between two tables.
- A Candidate Key can be any column or a combination of columns that can qualify as a unique key in the database. Each Candidate Key can qualify as a Primary Key.
- A Primary Key is a column or a combination of columns that uniquely identify a record. The primary key is a minimal super key, so there is one and only one primary key in any relationship.
<em> The main difference between them is that a primary key is unique but there can be many candidate keys. </em>
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Answer:
An Array
Explanation:
Array and Object is a good use for storing data and accessing it
Answer:
Explanation:
With an individual domain name we can upload all the content we want, in a free domain or share domain, upload content in some cases have a limit, for example the size of an image, in an individual domain we can add our brand, in a shared, we can add our brand side to company share those domains, we can have our own email address, practically we have a complete autonomy in our website.
