feat: changed primary key of facts table

.gitignore

@@ -2,3 +2,4 @@
 .venv
 sec_data/
 CIK*
+.vscode

db_schema.sql

@@ -1,11 +1,11 @@
 CREATE TABLE entities (
     cik INT PRIMARY KEY,               -- CIK is now the primary key, ensuring uniqueness
-    entityName VARCHAR(255) NOT NULL  -- Name of the company
+    name VARCHAR(255) NOT NULL  -- Name of the company
 );
 
 CREATE TABLE facts (
+    id VARCHAR(255) PRIMARY KEY, -- Unique identifier for the fact
     taxonomy VARCHAR(255),       -- Taxonomy of the fact
-    fact VARCHAR(255) PRIMARY KEY, -- Label of the fact
     label VARCHAR(255),       -- Label of the fact
     description TEXT, -- Description of the fact
     unit VARCHAR(255),           -- Unit of the fact
@@ -13,7 +13,7 @@ CREATE TABLE facts (
 
 CREATE TABLE data (
     cik INT,                            -- CIK of the company
-    fact VARCHAR(255),                 
+    fact_id VARCHAR(255),                 
     start DATE,                        -- Start date of the fact
     end DATE,
     val INT,
@@ -25,5 +25,5 @@ CREATE TABLE data (
     frame VARCHAR(255),
     PRIMARY KEY (cik, label)
     FOREIGN KEY (cik) REFERENCES entities(cik),
-    FOREIGN KEY (fact) REFERENCES facts(fact)
+    FOREIGN KEY (fact_id) REFERENCES facts(id)
 );