To understand the attributes of the column, it is essential to analyze the table. It refers to the first-class entities that serve as the data structure in the PC memory like dictionaries. The table is composed of collections of columns implemented as a dictionary. Another feature is that tables are column-oriented in contrast to the row-oriented tables in relational databases. However, data are usually kept is an ordered series in a column that creates retrieving and manipulating sequential data. Apart from these, columns have the potential to manage the stored data in a well-defined order with specified expressions and functions.