SBA (Stack-Based Approach) and SBQL (Stack-Based Query Language)
https://www.powershow.com/view4/6ef410-MmNhN/SBA_Stack-Based_Approach_and_SBQL_Stack-Based_Query_Language_powerpoint_ppt_presentation
 and SBQL (Stack-Based Query Language)&media=https://s3.amazonaws.com/images.powershow.com/7271440.pr.jpg)
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