diff --git a/db_deploy.sql b/db_deploy.sql
index 3970cb3..382c993 100644
--- a/db_deploy.sql
+++ b/db_deploy.sql
@@ -1,8 +1,11 @@
 BEGIN TRANSACTION;
 --\conninfo
-drop schema evt cascade;
+
 --------------------------build schema----------------------------------------------
 
+DROP EXTENSTION IF EXISTS ltree;
+CREATE EXTENSTION ltree;
+DROP SCHEMA IF EXISTS evt cascade;
 CREATE SCHEMA evt;
 COMMENT ON SCHEMA evt IS 'event log';
 
@@ -28,6 +31,16 @@ CREATE TABLE evt.acct (
 COMMENT ON COLUMN evt.acct.acct IS 'account';
 COMMENT ON COLUMN evt.acct.prop IS 'properties';
 
+------------------------fiscal periods------------------------
+CREATE TABLE evt.fspr (
+    id ltree
+    ,dur tstzrange
+)
+
+CREATE INDEX fspr_id ON evt.fspr USING GIST (id);
+COMMENT ON COLUMN evt.fspr.id IS 'fiscal period id';
+COMMENT ON COLUMN evt.fspr.dur IS 'fiscal period dutation in timestamp range';
+
 --------------------------relational ledger------------------------------------------
 
 CREATE TABLE evt.gl (
diff --git a/schema/tables/fspr.sql b/schema/tables/fspr.sql
new file mode 100644
index 0000000..037dc95
--- /dev/null
+++ b/schema/tables/fspr.sql
@@ -0,0 +1,9 @@
+------------------------fiscal periods------------------------
+CREATE TABLE evt.fspr (
+    id ltree
+    ,dur tstzrange
+)
+
+CREATE INDEX fspr_id ON evt.fspr USING GIST (id);
+COMMENT ON COLUMN evt.fspr.id IS 'fiscal period id';
+COMMENT ON COLUMN evt.fspr.dur IS 'fiscal period dutation in timestamp range';
\ No newline at end of file
diff --git a/schema/tables/perd.sql b/schema/tables/perd.sql
deleted file mode 100644
index b967650..0000000
--- a/schema/tables/perd.sql
+++ /dev/null
@@ -1,5 +0,0 @@
-------------------------fiscal periods------------------------
-CREATE TABLE evt.fspr (
-    id ltree
-    ,dur tstzrange
-)
\ No newline at end of file