diff --git a/build_json.xlsx b/build_json.xlsx
deleted file mode 100644
index 0c7022c..0000000
Binary files a/build_json.xlsx and /dev/null differ
diff --git a/coa.md b/coa.md
deleted file mode 100644
index ca7ec47..0000000
--- a/coa.md
+++ /dev/null
@@ -1,31 +0,0 @@
-Balance Sheet
------------------------
-* Cash
-    - On-hand
-    - Hunt Checking
-    - Hunt Savings
-* Prepaid
-    - Auto Insurance
-    - Home Insurance
-* Investments
-    - Principle 401k
-    - Fidelity 401k
-    - STRS
-    - PPG 401k
-    - Norwex SP
-* Assets
-    - Auto Cost
-    - Auto Depr
-    - Home
-* Credit
-    - Chase
-    - Discover
-    - Kohls
-    - Lowes
-    - BestBuy
-    - Target
-    - TheHomeDepot
-* Mortgage
-    - Principle
-
-
diff --git a/readme.md b/readme.md
index e7c2ac0..aea1511 100644
--- a/readme.md
+++ b/readme.md
@@ -1,4 +1,107 @@
-Concepts
+Overview
+----------------------------------------------
+
+
+```
+                        +--------------+
+                        |csv data      |
+                        +-----+--------+
+                              |
+                              |
+                              v
++----web ui----+        +----func+----+            +---table----+
+|import screen +------> |srce.sql     +----------> |tps.srce    | <-------------------+
++--------------+        +-------------+            +------------+                     |
+                        |p1:srce      |                                               |
+                        |p2:file path |                                               |
++-----web ui---+        +-------------+            +----table---+                     |
+|create map    |                                   |tps.map_rm  |                  +--+--db proc-----+
+|profile       +---------------------------------> |            |                  |update tps.trans |
++------+-------+                                   +-----+------+                  |column allj to   |
+       |                                                 ^                         |contain map data |
+       |                                                 |                         +--+--------------+
+       v                                                foreign key                   ^
++----web ui+----+                                        |                            |
+|assign maps    |                                        +                            |
+|for return     |                                  +---table----+                     |
++values         +--------------------------------> |tps.map_rv  |                     |
++---------------+                                  |            +---------------------+
+                                                   +------------+
+
+```
+
+The goal is to:
+1. house external data and prevent duplication on insert
+2. apply mappings to the data to make it meaningful
+3. be able to reference it from outside sources (no action required)
+
+There are 5 tables
+* tps.srce : definition of source
+* tps.trans : actual data
+* tps.trans_log : log of inserts
+* tps.map_rm : map profile
+* tps.map_rv : profile associated values
+
+# tps.srce schema
+    {
+        "name": "WMPD",
+        "descr": "Williams Paid File",
+        "type":"csv",
+        "schema": [
+            {
+                "key": "Carrier",
+                "type": "text"
+            },
+            {
+                "key": "Pd Amt",
+                "type": "numeric"
+            },
+            {
+                "key": "Pay Dt",
+                "type": "date"
+            }
+        ],
+        "unique_constraint": {
+            "fields":[
+                "{Pay Dt}",
+                "{Carrier}" 
+            ]
+        }
+    }
+
+# tps.map_rm schema
+    {
+        "name":"Strip Amount Commas",
+        "description":"the Amount field comes from PNC with commas embeded so it cannot be cast to numeric",
+        "defn": [
+            {
+                "key": "{Amount}",        /*this is a Postgres text array stored in json*/
+                "field": "amount",        /*key name assigned to result of regex/* 
+                "regex": ",",             /*regular expression/*
+                "flag":"g",
+                "retain":"y",
+                "map":"n"
+            }
+        ],
+        "function":"replace",
+        "where": [
+            {
+            }
+        ]
+    }
+
+
+
+
+
+
+
+
+
+
+
+
+Notes
 ======================================
 
 pull various static files into postgres and do basic transformation without losing the original document