My supervisor corrected the draft of my thesis, inserting a lot of articles here and there. I have doubts if he was correct. Could someone comment on the following sentences?
Over the last decade a lot of companies recognized [the] importance of data warehousing and business intelligence technologies to their businesses. Complex queries can significantly decrease [the] performance of a source system. [The] Availability and quality of data is crucial for this process. Because of [the] standardization of SQL, [the] technical heterogeneity could be solved automatically.