For 100% polyester fabrics use 1.5 lb. of dye per 100 lbs. of fabric (1.5% OWG) to get medium shades. (With black, you are going to get more of a charcoal grey with this product.) That would be 6 - 4 oz packets, so 3 for 50 lbs. of fabric, etc.
XML data type was introduced in SQL Server 2005. This type allows you to store XML data up to 2 GB. Here is a small example of, pretty much self-explanatory.
When creating the XML file, it maps the Structured Query Language (SQL) tables from the database to the appropriate XML tag names. When you import rules and rule items in the database, the rank for each of these is determined by the order in which they appear in the Rule Set XML file.