diff --git a/src/sql.py b/src/sql.py
index ca5d418..cc99c01 100644
--- a/src/sql.py
+++ b/src/sql.py
@@ -1,9 +1,11 @@
-from psycopg2._psycopg import cursor
+from typing import List
 
-from types import Account, Posting, PostingFilter
+from psycopg2._psycopg import cursor as Cursor
+
+from src.types import Account, Posting, PostingFilter
 
 
-def add_account(cursor: cursor, data: Account) -> int:
+def add_account(cursor: Cursor, data: Account) -> int:
     """Adds an account to the database."""
     cursor.execute('INSERT INTO Account'
                    '(first_name, last_name, email)'
@@ -13,7 +15,17 @@ def add_account(cursor: cursor, data: Account) -> int:
     return cursor.fetchone()[0]
 
 
-def add_posting(cursor: cursor, data: Posting) -> int:
+def add_accounts(cursor: Cursor, data: List[Account]) -> List[int]:
+    """Adds multiple accounts to the database."""
+    cursor.executemany('INSERT INTO Account'
+                       '(first_name, last_name, email)'
+                       'VALUES (%s, %s, %s)'
+                       'RETURNING id',
+                       [(account.first_name, account.last_name, account.email) for account in data])
+    return [id for (id,) in cursor.fetchall()]
+
+
+def add_posting(cursor: Cursor, data: Posting) -> int:
     """Adds a posting to the database."""
     cursor.execute('INSERT INTO Posting'
                    '(name, date, description, a, b, c)'
@@ -23,7 +35,18 @@ def add_posting(cursor: cursor, data: Posting) -> int:
     return cursor.fetchone()[0]
 
 
-def add_posting_filter(cursor: cursor, data: PostingFilter) -> int:
+def add_postings(cursor: Cursor, data: List[Posting]) -> List[int]:
+    """Adds multiple postings to the database."""
+    cursor.executemany('INSERT INTO Posting'
+                       '(name, date, description, a, b, c)'
+                       'VALUES (%s, %s, %s, %s, %s, %s)'
+                       'RETURNING id',
+                       [(posting.name, posting.date, posting.description, posting.a, posting.b, posting.c) for posting
+                        in data])
+    return [id for (id,) in cursor.fetchall()]
+
+
+def add_posting_filter(cursor: Cursor, data: PostingFilter) -> int:
     """Adds a posting filter to the database."""
     b_lower, b_upper = data.b if data.b else (None, None)
     c_lower, c_upper = data.c if data.c else (None, None)
@@ -33,3 +56,21 @@ def add_posting_filter(cursor: cursor, data: PostingFilter) -> int:
                    'RETURNING id',
                    (data.creator, data.name, data.expires, data.a, b_lower, b_upper, c_lower, c_upper))
     return cursor.fetchone()[0]
+
+
+def add_posting_filters(cursor: Cursor, data: List[PostingFilter]) -> List[int]:
+    """Adds multiple posting filters to the database."""
+    cursor.executemany('INSERT INTO PostingFilter'
+                       '(creator, name, expires, a, b_lower, b_upper, c_lower, c_upper)'
+                       'VALUES (%s, %s, %s, %s, %s, %s)'
+                       'RETURNING id',
+                       [(posting_filter.creator, posting_filter.name, posting_filter.expires, posting_filter.a,
+                         posting_filter.b[0], posting_filter.b[1], posting_filter.c[0], posting_filter.c[1]) for
+                        posting_filter in data])
+    return [id for (id,) in cursor.fetchall()]
+
+
+def get_account_ids(cur: Cursor):
+    """Returns a list of all account IDs."""
+    cur.execute('SELECT id FROM Account')
+    return [id for (id,) in cur.fetchall()]