11. A computer-implemented method for extract transform load (ETL) input suggestion for an ETL system in which a current job is being created, comprising: determining, by a computer processor, when a new input is made in the current job in the ETL system and dynamically receiving the new input, the new input a new stage input; updating stored information relating to the current job with the new input; accessing rules which apply to the current job, the rules including next stage rules and optimization rules for optimizing the current job; analyzing and applying, by the computer processor, the rules based on the new input and the current job stored information to generate one or more suggested next inputs in the current job, the one or more suggested next inputs are one or more of a new stage input, a connection between stages input, and a property of a stage input; providing a weighting for the one or more suggested next inputs based on the analysis and application of the rules; and providing a prompt in the current job in the ETL system with the suggested one or more next inputs and their weightings, wherein in response to the new input being the new stage input: the next stage rules are static rules, and the next stage rules include two or more of the group of: connectivity rules of the previous stage that was added, user configurable patterns that define commonly used layouts of stages for a specific customer environment, and potential errors or warnings that are generated if a stage were to be used next.
11. A computer-implemented method for extract transform load (ETL) input suggestion for an ETL system in which a current job is being created, comprising: determining, by a computer processor, when a new input is made in the current job in the ETL system and dynamically receiving the new input, the new input a new stage input; updating stored information relating to the current job with the new input; accessing rules which apply to the current job, the rules including next stage rules and optimization rules for optimizing the current job; analyzing and applying, by the computer processor, the rules based on the new input and the current job stored information to generate one or more suggested next inputs in the current job, the one or more suggested next inputs are one or more of a new stage input, a connection between stages input, and a property of a stage input; providing a weighting for the one or more suggested next inputs based on the analysis and application of the rules; and providing a prompt in the current job in the ETL system with the suggested one or more next inputs and their weightings, wherein in response to the new input being the new stage input: the next stage rules are static rules, and the next stage rules include two or more of the group of: connectivity rules of the previous stage that was added, user configurable patterns that define commonly used layouts of stages for a specific customer environment, and potential errors or warnings that are generated if a stage were to be used next. 14. The method as claimed in claim 11 , including: monitoring the current job to determine when a new input is made in the current job in the ETL system and iterating the method of claim 1 for each new input.