It is recommended to standardize your naming format. It makes the code readable and understandable. This is very helpful when more than one developer is involved. Use the following conventions:
Upper CamelCase comprises several words joined together without spaces, with the initial letter in uppercase and the first letters of subsequent words in uppercase, for example, LastName.
Lower CamelCase comprises several words joined together without spaces, with the initial letter in lowercase and the first letters of subsequent words in uppercase, for example, readData.