diff --git a/crud.py b/crud.py
index 5036ebd..66ee24a 100644
--- a/crud.py
+++ b/crud.py
@@ -1,5 +1,6 @@
 import pandas as pd
 import parser
+import earthquakes as eq
 
 pd.set_option('display.max_rows', 500)
 pd.set_option('display.max_columns', 500)
@@ -20,7 +21,7 @@ def read_header(df, event_id):
     info = []
     for (i, col) in enumerate(headerCols):
         info.append(f"{i+1} {col}: {row[col]}")
-    infoString = f"Event {event_id} header:\n" + "\n".join(info) 
+    infoString = f"Header do evento {event_id}:\n" + "\n".join(info) 
     return infoString
 
 
@@ -32,12 +33,13 @@ def get_table(df, event_id):
     table = rows[cols[start:]].iloc[1:]
     return table
 
-def read_table_row(df, event_id, row_number):
+def read_table_row(df, event_id, row_number_1):
     # retorna uma linha específica da tabela
+    row_number_0 = row_number_1 - 1
     table = get_table(df, event_id)
-    if row_number < 0 or row_number >= len(table):
-        return f"Linha {row_number} não pertence ao evento {event_id}."
-    row = table.iloc[row_number]
+    if row_number_0 < 0 or row_number_0 >= len(table):
+        return f"Linha {row_number_1} não pertence ao evento {event_id}."
+    row = table.iloc[row_number_0]
     cols = list(df.columns)
     start = cols.index("STAT")
     tableCols = cols[start:]
@@ -45,18 +47,90 @@ def read_table_row(df, event_id, row_number):
     for (i, col) in enumerate(tableCols):
         info.append(f"{i+1} {col}: {row[col]}")
         # TODO corrigir numeros acima de 10 arruinando o alinhamento
-    infoString = f"Event {event_id}, row {row_number} header:\n" + "\n".join(info) 
+    infoString = f"Linha {row_number_1} do evento {event_id}:\n" + "\n".join(info) 
     return infoString
 
+def update_table_row(df, event_id, row_number_1, new_data):
+    # atualiza uma linha específica da tabela do evento
+    row_number_0 = row_number_1 - 1
+    table = get_table(df, event_id)
+    if row_number_0 < 0 or row_number_0 >= len(table):
+        return f"Linha {row_number_1} não pertence ao evento {event_id}."
+    for key, value in new_data.items():
+        if key in table.columns:
+            df.loc[(df["ID"] == event_id) & (df.index == table.index[row_number_0]), key] = value
+    return f"Linha {row_number_1} do evento {event_id} atualizada com sucesso."
 
-# teste temporário enquanto não temnos menu
+def update_header(df, event_id, new_data):
+    # atualiza o header de um evento
+    for key, value in new_data.items():
+        if key in df.columns:
+            df.loc[(df["ID"] == event_id) | df.iloc[0], key] = value
+    return f"Header do evento {event_id} atualizado com sucesso."
+
+def delete_event(df, event_id):
+    # Apaga um evento inteiro (header + tabela)
+    new_df = df.drop(df[df["ID"] == event_id].index)
+    new_df.loc[df["ID"] > event_id, "ID"] -= 1
+    return new_df
+
+def delete_table_row(df, event_id, row_number_1):
+    # Apaga uma linha específica da tabela do evento
+    row_number_0 = row_number_1 - 1
+    table = get_table(df, event_id)
+    if row_number_0 < 0 or row_number_0 >= len(table):
+        return f"Linha {row_number_1} não pertence ao evento {event_id}."
+    new_df = df.drop(table.index[row_number_0])
+    return new_df
+
+def create_blank_event(df, event_id):
+    # Criar um evento vazio com linha de header e 1 linha de coluna
+    df.loc[df["ID"] >= event_id, "ID"] += 1
+
+    blank_row_df = pd.DataFrame(columns=df.columns, index=[0, 1])
+    blank_row_df["ID"] = event_id
+    blank_row_df = blank_row_df.astype(df.dtypes)
+
+    new_df = pd.concat([df, blank_row_df], ignore_index=True)
+    new_df = new_df.sort_values(by="ID", kind="mergesort").reset_index(drop=True)
+
+    return new_df
+
+    
+def create_table_row(df, event_id, row_number_1):
+    event_rows = df[df["ID"] == event_id]
+    if event_rows.empty:
+        return df, f"Erro: Evento com ID {event_id} não encontrado."
+
+    header_idx = event_rows.index[0]
+    table_size = len(event_rows.index) - 1
+
+    # Validar posição da nova linha
+    if not (1 <= row_number_1 <= table_size + 1):
+        return df, f"Erro: Posição {row_number_1} inválida. Evento {event_id} tem {table_size} linha(s) na tabela."
+    insertion_point = header_idx + row_number_1
+
+    new_row_df = pd.DataFrame(columns=df.columns, index=[0])
+    new_row_df['ID'] = event_id
+    new_row_df = new_row_df.astype(df.dtypes)
+    df_before = df.iloc[:insertion_point]
+    df_after = df.iloc[insertion_point:]
+
+    new_df = pd.concat([df_before, new_row_df, df_after], ignore_index=True)
+
+    return new_df, f"Linha inserida com sucesso na posição {row_number_1} do evento {event_id}."
+
+''' teste temporário enquanto não temnos menu
 if __name__ == "__main__":
     df = parser.parse()
     first_id = read_ids(df)[0]
-    print(read_ids(df))
-    print("\n")
-    print(read_header(df, first_id))
-    print("\n")
-    print(get_table(df, first_id))
-    print("\n")
-    print(read_table_row(df, first_id, 2))
+    for i in range(5):
+        df = delete_event(df, i)
+    for i in range(5):
+        df = create_blank_event(df, i+5)
+    update_table_row(df, 5, 1, {"Velo": 5.1})
+    df, msg = insert_table_row(df, 5, 1)
+    df, msg = insert_table_row(df, 5, 3)
+    eq.guardar_csv(df, "dados.csv")
+    eq.guardar_df(df, "data.txt")
+'''
\ No newline at end of file
diff --git a/earthquakes.py b/earthquakes.py
index be20fa8..73a1611 100644
--- a/earthquakes.py
+++ b/earthquakes.py
@@ -20,6 +20,13 @@ def guardar_json(df: pd.DataFrame, fname: str) -> bool:
             return False
     return True
 
+def guardar_csv(df: pd.DataFrame, fname: str):
+    with open(fname, "w") as fp:
+        try:
+            df.to_csv(fp, index=False)
+        except ValueError:
+            return False
+    return True
 
 def main():
     pass
diff --git a/requirements.txt b/requirements.txt
index ef9805b..e7f650b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,2 @@
 pytest==8.4.2
+pandas==2.3.3
\ No newline at end of file