Vahmine Technologies Developer Interview Questions and Answers

Arrays are fixed in size and store homogeneous data types, while collections are dynamic and store heterogeneous data types.

• Arrays are declared with a fixed size, while collections can grow or shrink dynamically.

• Arrays can only store elements of the same data type, while collections can store elements of different data types.

• Arrays are faster for accessing elements, while collections are better for adding or removing e...read more

Join queries are used to combine data from multiple tables based on a common column.

• Join queries are used when data is spread across multiple tables and needs to be combined for analysis.

• They are useful for retrieving data from related tables, such as customer orders and order details.

• Join queries can be used to filter data based on specific criteria, such as only retrieving orders from a certain date range.

• There are d...read more