diff --git a/documentation/database/structure_database.png b/documentation/database/structure_database.png
index d7d459d..4265215 100644
Binary files a/documentation/database/structure_database.png and b/documentation/database/structure_database.png differ
diff --git a/documentation/database/structure_database.uxf b/documentation/database/structure_database.uxf
index 3f3aaf2..afdf01e 100644
--- a/documentation/database/structure_database.uxf
+++ b/documentation/database/structure_database.uxf
@@ -9,18 +9,30 @@ password                  varchar(255)
 username                 varchar(255)
 telegram_user_id      varchar(255)
 admin                             tinyint(1)
-</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>705</x><y>150</y><w>210</w><h>70</h></coordinates><panel_attributes>shares
+cron                            varchar(20)
+</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>705</x><y>150</y><w>210</w><h>90</h></coordinates><panel_attributes>shares
 --
 PK: a_id                              int(11)
 FK: email                  varchar(255)
-symbol                     varchar(255)
-</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>135</x><y>150</y><w>210</w><h>130</h></coordinates><panel_attributes>transaction
+isin                           varchar(255)
+comment                  varchar(255)</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>135</x><y>150</y><w>210</w><h>130</h></coordinates><panel_attributes>transaction
 --
 PK: t_id                               int(11)
 FK: email                  varchar(255)
-symbol                     varchar(255)
+isin                           varchar(255)
+comment                  varchar(255)
 time                               datetime
 count                                 int(11)
 price                                     float
 </panel_attributes><additional_attributes></additional_attributes></element><element><id>Relation</id><coordinates><x>335</x><y>190</y><w>110</w><h>100</h></coordinates><panel_attributes>lt=&lt;&lt;-
-group=1</panel_attributes><additional_attributes>10;10;60;10;60;80;90;80</additional_attributes></element><element><id>Relation</id><coordinates><x>625</x><y>190</y><w>100</w><h>100</h></coordinates><panel_attributes>lt=&lt;&lt;-</panel_attributes><additional_attributes>80;10;50;10;50;80;10;80</additional_attributes></element><element><id>Relation</id><coordinates><x>625</x><y>260</y><w>100</w><h>160</h></coordinates><panel_attributes>lt=&lt;&lt;-</panel_attributes><additional_attributes>80;140;50;140;50;10;10;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>140</x><y>410</y><w>100</w><h>30</h></coordinates><panel_attributes>Database V0.1</panel_attributes><additional_attributes></additional_attributes></element></diagram>
\ No newline at end of file
+group=1</panel_attributes><additional_attributes>10;10;60;10;60;80;90;80</additional_attributes></element><element><id>Relation</id><coordinates><x>625</x><y>190</y><w>100</w><h>100</h></coordinates><panel_attributes>lt=&lt;&lt;-</panel_attributes><additional_attributes>80;10;50;10;50;80;10;80</additional_attributes></element><element><id>Relation</id><coordinates><x>625</x><y>260</y><w>100</w><h>160</h></coordinates><panel_attributes>lt=&lt;&lt;-</panel_attributes><additional_attributes>80;140;50;140;50;10;10;10</additional_attributes></element><element><id>UMLClass</id><coordinates><x>140</x><y>410</y><w>100</w><h>30</h></coordinates><panel_attributes>Database V0.1</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>705</x><y>150</y><w>210</w><h>90</h></coordinates><panel_attributes>shares
+--
+PK: a_id                              int(11)
+FK: email                  varchar(255)
+isin                           varchar(255)
+comment                  varchar(255)</panel_attributes><additional_attributes></additional_attributes></element><element><id>UMLClass</id><coordinates><x>140</x><y>300</y><w>210</w><h>90</h></coordinates><panel_attributes>share_price
+--
+PK: id                                 int(11)
+isin                           varchar(255)
+price                                      float
+date                                datetime</panel_attributes><additional_attributes></additional_attributes></element></diagram>
\ No newline at end of file