Supply Chain Innovations

With respect to the supply chain, discuss the terms Just-in-time (JIT) & Materials Requirements Planning (MRP).

1) How are they related to maintaining proper levels of inventory? (200)

2) Wal-Mart is well know to be a leader in Supply Chain Management.  Search the internet, the APUS library, books, periodicals, articles. In a minimum of at least 300 words describe innovations Wal-Mart has brought to Supply Chain Management.