Express the following queries in SQL: a) List first name, last name and department ID of all employees ordered according to the hire date in descending order. b) Display the details (Employee ID, First Name, Salary, department ID) of employees working in department number 90.

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Multiple Table

In a database, a table is used to store data in the form of rows and columns. Rows are aligned horizontally and identified by one or more values in a specific column. Columns are vertically aligned and identified by a unique column name.