diff --git a/migrations-mysql/README b/migrations-mysql/README
new file mode 100644
index 0000000000000000000000000000000000000000..98e4f9c44effe479ed38c66ba922e7bcc672916f
--- /dev/null
+++ b/migrations-mysql/README
@@ -0,0 +1 @@
+Generic single-database configuration.
\ No newline at end of file
diff --git a/migrations-mysql/alembic.ini b/migrations-mysql/alembic.ini
new file mode 100644
index 0000000000000000000000000000000000000000..f8ed4801f78bcb83cc6acb589508c1b24eda297a
--- /dev/null
+++ b/migrations-mysql/alembic.ini
@@ -0,0 +1,45 @@
+# A generic, single database configuration.
+
+[alembic]
+# template used to generate migration files
+# file_template = %%(rev)s_%%(slug)s
+
+# set to 'true' to run the environment during
+# the 'revision' command, regardless of autogenerate
+# revision_environment = false
+
+
+# Logging configuration
+[loggers]
+keys = root,sqlalchemy,alembic
+
+[handlers]
+keys = console
+
+[formatters]
+keys = generic
+
+[logger_root]
+level = WARN
+handlers = console
+qualname =
+
+[logger_sqlalchemy]
+level = WARN
+handlers =
+qualname = sqlalchemy.engine
+
+[logger_alembic]
+level = INFO
+handlers =
+qualname = alembic
+
+[handler_console]
+class = StreamHandler
+args = (sys.stderr,)
+level = NOTSET
+formatter = generic
+
+[formatter_generic]
+format = %(levelname)-5.5s [%(name)s] %(message)s
+datefmt = %H:%M:%S
diff --git a/migrations-mysql/env.py b/migrations-mysql/env.py
new file mode 100644
index 0000000000000000000000000000000000000000..23663ff2f54e6c4425953537976b175246c8a9e6
--- /dev/null
+++ b/migrations-mysql/env.py
@@ -0,0 +1,87 @@
+from __future__ import with_statement
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from logging.config import fileConfig
+import logging
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+logger = logging.getLogger('alembic.env')
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+from flask import current_app
+config.set_main_option('sqlalchemy.url',
+                       current_app.config.get('SQLALCHEMY_DATABASE_URI'))
+target_metadata = current_app.extensions['migrate'].db.metadata
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL
+    and not an Engine, though an Engine is acceptable
+    here as well.  By skipping the Engine creation
+    we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the
+    script output.
+
+    """
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(url=url)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine
+    and associate a connection with the context.
+
+    """
+
+    # this callback is used to prevent an auto-migration from being generated
+    # when there are no changes to the schema
+    # reference: http://alembic.zzzcomputing.com/en/latest/cookbook.html
+    def process_revision_directives(context, revision, directives):
+        if getattr(config.cmd_opts, 'autogenerate', False):
+            script = directives[0]
+            if script.upgrade_ops.is_empty():
+                directives[:] = []
+                logger.info('No changes in schema detected.')
+
+    engine = engine_from_config(config.get_section(config.config_ini_section),
+                                prefix='sqlalchemy.',
+                                poolclass=pool.NullPool)
+
+    connection = engine.connect()
+    context.configure(connection=connection,
+                      target_metadata=target_metadata,
+                      process_revision_directives=process_revision_directives,
+                      **current_app.extensions['migrate'].configure_args)
+
+    try:
+        with context.begin_transaction():
+            context.run_migrations()
+    finally:
+        connection.close()
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/migrations-mysql/script.py.mako b/migrations-mysql/script.py.mako
new file mode 100644
index 0000000000000000000000000000000000000000..2c0156303a8df3ffdc9de87765bf801bf6bea4a5
--- /dev/null
+++ b/migrations-mysql/script.py.mako
@@ -0,0 +1,24 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+
+"""
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+branch_labels = ${repr(branch_labels)}
+depends_on = ${repr(depends_on)}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}
diff --git a/migrations-mysql/versions/841fb7253188_.py b/migrations-mysql/versions/841fb7253188_.py
new file mode 100644
index 0000000000000000000000000000000000000000..e3b3032a5cf3c66cec1432802124c0408ee68d23
--- /dev/null
+++ b/migrations-mysql/versions/841fb7253188_.py
@@ -0,0 +1,250 @@
+"""empty message
+
+Revision ID: 841fb7253188
+Revises: 
+Create Date: 2018-11-09 18:49:39.933529
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '841fb7253188'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('protocoltypes',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=128), nullable=True),
+    sa.Column('short_name', sa.String(length=128), nullable=True),
+    sa.Column('organization', sa.Text(), nullable=True),
+    sa.Column('usual_time', sa.Time(), nullable=True),
+    sa.Column('is_public', sa.Boolean(), nullable=True),
+    sa.Column('modify_group', sa.Text(), nullable=True),
+    sa.Column('private_group', sa.Text(), nullable=True),
+    sa.Column('public_group', sa.Text(), nullable=True),
+    sa.Column('publish_group', sa.Text(), nullable=True),
+    sa.Column('private_mail', sa.Text(), nullable=True),
+    sa.Column('public_mail', sa.Text(), nullable=True),
+    sa.Column('non_reproducible_pad_links', sa.Boolean(), nullable=True),
+    sa.Column('use_wiki', sa.Boolean(), nullable=True),
+    sa.Column('wiki_category', sa.Text(), nullable=True),
+    sa.Column('wiki_only_public', sa.Boolean(), nullable=True),
+    sa.Column('printer', sa.Text(), nullable=True),
+    sa.Column('calendar', sa.Text(), nullable=True),
+    sa.Column('restrict_networks', sa.Boolean(), nullable=True),
+    sa.Column('allowed_networks', sa.Text(), nullable=True),
+    sa.Column('latex_template', sa.Text(), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name'),
+    sa.UniqueConstraint('short_name')
+    )
+    op.create_table('todomails',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('name', sa.String(length=128), nullable=True),
+    sa.Column('mail', sa.Text(), nullable=True),
+    sa.PrimaryKeyConstraint('id'),
+    sa.UniqueConstraint('name')
+    )
+    op.create_table('decisioncategories',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('defaultmetas',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('key', sa.Text(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('value', sa.Text(), nullable=True),
+    sa.Column('internal', sa.Boolean(), nullable=True),
+    sa.Column('prior', sa.Boolean(), nullable=False),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('defaulttops',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('number', sa.Integer(), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('meetingreminders',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('days_before', sa.Integer(), nullable=True),
+    sa.Column('send_public', sa.Boolean(), nullable=True),
+    sa.Column('send_private', sa.Boolean(), nullable=True),
+    sa.Column('additional_text', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('protocols',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('source', sa.Text(), nullable=True),
+    sa.Column('content_public', sa.Text(), nullable=True),
+    sa.Column('content_private', sa.Text(), nullable=True),
+    sa.Column('content_html_public', sa.Text(), nullable=True),
+    sa.Column('content_html_private', sa.Text(), nullable=True),
+    sa.Column('date', sa.Date(), nullable=True),
+    sa.Column('start_time', sa.Time(), nullable=True),
+    sa.Column('end_time', sa.Time(), nullable=True),
+    sa.Column('done', sa.Boolean(), nullable=False),
+    sa.Column('public', sa.Boolean(), nullable=True),
+    sa.Column('pad_identifier', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('todos',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocoltype_id', sa.Integer(), nullable=True),
+    sa.Column('number', sa.Integer(), nullable=True),
+    sa.Column('who', sa.Text(), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.Column('state', sa.Enum('open', 'waiting', 'in_progress', 'after', 'before', 'orphan', 'done', 'rejected', 'obsolete', name='todostate'), nullable=False),
+    sa.Column('date', sa.Date(), nullable=True),
+    sa.ForeignKeyConstraint(['protocoltype_id'], ['protocoltypes.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('decisions',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('content', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('documents',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('filename', sa.Text(), nullable=True),
+    sa.Column('is_compiled', sa.Boolean(), nullable=True),
+    sa.Column('is_private', sa.Boolean(), nullable=True),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('errors',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('action', sa.Text(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('datetime', sa.DateTime(), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('likeprotocolassociations',
+    sa.Column('like_id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['like_id'], ['likes.id'], ),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('like_id', 'protocol_id')
+    )
+    op.create_table('liketodoassociations',
+    sa.Column('like_id', sa.Integer(), nullable=False),
+    sa.Column('todo_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['like_id'], ['likes.id'], ),
+    sa.ForeignKeyConstraint(['todo_id'], ['todos.id'], ),
+    sa.PrimaryKeyConstraint('like_id', 'todo_id')
+    )
+    op.create_table('localtops',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('defaulttop_id', sa.Integer(), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['defaulttop_id'], ['defaulttops.id'], ),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('metas',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('value', sa.Text(), nullable=True),
+    sa.Column('internal', sa.Boolean(), nullable=True),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('todoprotocolassociations',
+    sa.Column('todo_id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.ForeignKeyConstraint(['todo_id'], ['todos.id'], ),
+    sa.PrimaryKeyConstraint('todo_id', 'protocol_id')
+    )
+    op.create_table('tops',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('protocol_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('number', sa.Integer(), nullable=True),
+    sa.Column('planned', sa.Boolean(), nullable=True),
+    sa.Column('description', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['protocol_id'], ['protocols.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('decisioncategoryassociations',
+    sa.Column('decision_id', sa.Integer(), nullable=False),
+    sa.Column('decisioncategory_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['decision_id'], ['decisions.id'], ),
+    sa.ForeignKeyConstraint(['decisioncategory_id'], ['decisioncategories.id'], ),
+    sa.PrimaryKeyConstraint('decision_id', 'decisioncategory_id')
+    )
+    op.create_table('decisiondocuments',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('decision_id', sa.Integer(), nullable=True),
+    sa.Column('name', sa.Text(), nullable=True),
+    sa.Column('filename', sa.Text(), nullable=True),
+    sa.ForeignKeyConstraint(['decision_id'], ['decisions.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_table('likedecisionassociations',
+    sa.Column('like_id', sa.Integer(), nullable=False),
+    sa.Column('decision_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['decision_id'], ['decisions.id'], ),
+    sa.ForeignKeyConstraint(['like_id'], ['likes.id'], ),
+    sa.PrimaryKeyConstraint('like_id', 'decision_id')
+    )
+    op.create_table('liketopassociations',
+    sa.Column('like_id', sa.Integer(), nullable=False),
+    sa.Column('top_id', sa.Integer(), nullable=False),
+    sa.ForeignKeyConstraint(['like_id'], ['likes.id'], ),
+    sa.ForeignKeyConstraint(['top_id'], ['tops.id'], ),
+    sa.PrimaryKeyConstraint('like_id', 'top_id')
+    )
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_table('liketopassociations')
+    op.drop_table('likedecisionassociations')
+    op.drop_table('decisiondocuments')
+    op.drop_table('decisioncategoryassociations')
+    op.drop_table('tops')
+    op.drop_table('todoprotocolassociations')
+    op.drop_table('metas')
+    op.drop_table('localtops')
+    op.drop_table('liketodoassociations')
+    op.drop_table('likeprotocolassociations')
+    op.drop_table('errors')
+    op.drop_table('documents')
+    op.drop_table('decisions')
+    op.drop_table('todos')
+    op.drop_table('protocols')
+    op.drop_table('meetingreminders')
+    op.drop_table('defaulttops')
+    op.drop_table('defaultmetas')
+    op.drop_table('decisioncategories')
+    op.drop_table('todomails')
+    op.drop_table('protocoltypes')
+    # ### end Alembic commands ###
diff --git a/models/database.py b/models/database.py
index 3f2477066c1cb26bc0833b518f3f4cff437e7eb2..3a5a2cb1c82b9fb1760b4a780871f74911671cfe 100644
--- a/models/database.py
+++ b/models/database.py
@@ -57,26 +57,26 @@ class ProtocolType(DatabaseModel):
     __tablename__ = "protocoltypes"
     __model_name__ = "protocoltype"
     id = db.Column(db.Integer, primary_key=True)
-    name = db.Column(db.String, unique=True)
-    short_name = db.Column(db.String, unique=True)
-    organization = db.Column(db.String)
+    name = db.Column(db.String(128), unique=True)
+    short_name = db.Column(db.String(128), unique=True)
+    organization = db.Column(db.Text)
     usual_time = db.Column(db.Time)
     is_public = db.Column(db.Boolean)
-    modify_group = db.Column(db.String)
-    private_group = db.Column(db.String)
-    public_group = db.Column(db.String)
-    publish_group = db.Column(db.String)
-    private_mail = db.Column(db.String)
-    public_mail = db.Column(db.String)
+    modify_group = db.Column(db.Text)
+    private_group = db.Column(db.Text)
+    public_group = db.Column(db.Text)
+    publish_group = db.Column(db.Text)
+    private_mail = db.Column(db.Text)
+    public_mail = db.Column(db.Text)
     non_reproducible_pad_links = db.Column(db.Boolean)
     use_wiki = db.Column(db.Boolean)
-    wiki_category = db.Column(db.String)
+    wiki_category = db.Column(db.Text)
     wiki_only_public = db.Column(db.Boolean)
-    printer = db.Column(db.String)
-    calendar = db.Column(db.String)
+    printer = db.Column(db.Text)
+    calendar = db.Column(db.Text)
     restrict_networks = db.Column(db.Boolean)
-    allowed_networks = db.Column(db.String)
-    latex_template = db.Column(db.String)
+    allowed_networks = db.Column(db.Text)
+    latex_template = db.Column(db.Text)
 
     protocols = relationship(
         "Protocol", backref=backref("protocoltype"),
@@ -187,17 +187,17 @@ class Protocol(DatabaseModel):
     __model_name__ = "protocol"
     id = db.Column(db.Integer, primary_key=True)
     protocoltype_id = db.Column(db.Integer, db.ForeignKey("protocoltypes.id"))
-    source = db.Column(db.String)
-    content_public = db.Column(db.String)
-    content_private = db.Column(db.String)
-    content_html_public = db.Column(db.String)
-    content_html_private = db.Column(db.String)
+    source = db.Column(db.Text)
+    content_public = db.Column(db.Text)
+    content_private = db.Column(db.Text)
+    content_html_public = db.Column(db.Text)
+    content_html_private = db.Column(db.Text)
     date = db.Column(db.Date)
     start_time = db.Column(db.Time)
     end_time = db.Column(db.Time)
     done = db.Column(db.Boolean, nullable=False, default=False)
     public = db.Column(db.Boolean)
-    pad_identifier = db.Column(db.String)
+    pad_identifier = db.Column(db.Text)
 
     tops = relationship(
         "TOP", backref=backref("protocol"),
@@ -464,9 +464,9 @@ class DefaultTOP(DatabaseModel):
     __model_name__ = "defaulttop"
     id = db.Column(db.Integer, primary_key=True)
     protocoltype_id = db.Column(db.Integer, db.ForeignKey("protocoltypes.id"))
-    name = db.Column(db.String)
+    name = db.Column(db.Text)
     number = db.Column(db.Integer)
-    description = db.Column(db.String)
+    description = db.Column(db.Text)
 
     localtops = relationship(
         "LocalTOP", backref=backref("defaulttop"),
@@ -495,10 +495,10 @@ class TOP(DatabaseModel):
     __model_name__ = "top"
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
-    name = db.Column(db.String)
+    name = db.Column(db.Text)
     number = db.Column(db.Integer)
     planned = db.Column(db.Boolean)
-    description = db.Column(db.String)
+    description = db.Column(db.Text)
 
     likes = relationship("Like", secondary="liketopassociations")
 
@@ -512,7 +512,7 @@ class LocalTOP(DatabaseModel):
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
     defaulttop_id = db.Column(db.Integer, db.ForeignKey("defaulttops.id"))
-    description = db.Column(db.String)
+    description = db.Column(db.Text)
 
     def get_parent(self):
         return self.protocol
@@ -536,8 +536,8 @@ class Document(DatabaseModel):
     __model_name__ = "document"
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
-    name = db.Column(db.String)
-    filename = db.Column(db.String)
+    name = db.Column(db.Text)
+    filename = db.Column(db.Text)
     is_compiled = db.Column(db.Boolean)
     is_private = db.Column(db.Boolean)
 
@@ -565,8 +565,8 @@ class DecisionDocument(DatabaseModel):
     __model_name__ = "decisiondocument"
     id = db.Column(db.Integer, primary_key=True)
     decision_id = db.Column(db.Integer, db.ForeignKey("decisions.id"))
-    name = db.Column(db.String)
-    filename = db.Column(db.String)
+    name = db.Column(db.Text)
+    filename = db.Column(db.Text)
 
     def get_parent(self):
         return self.decision
@@ -677,8 +677,8 @@ class Todo(DatabaseModel):
     id = db.Column(db.Integer, primary_key=True)
     protocoltype_id = db.Column(db.Integer, db.ForeignKey("protocoltypes.id"))
     number = db.Column(db.Integer)
-    who = db.Column(db.String)
-    description = db.Column(db.String)
+    who = db.Column(db.Text)
+    description = db.Column(db.Text)
     state = db.Column(db.Enum(TodoState), nullable=False)
     date = db.Column(db.Date, nullable=True)
 
@@ -781,7 +781,7 @@ class Decision(DatabaseModel):
     __model_name__ = "decision"
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
-    content = db.Column(db.String)
+    content = db.Column(db.Text)
 
     document = relationship(
         "DecisionDocument", backref=backref("decision"),
@@ -803,7 +803,7 @@ class DecisionCategory(DatabaseModel):
     __model_name__ = "decisioncategory"
     id = db.Column(db.Integer, primary_key=True)
     protocoltype_id = db.Column(db.Integer, db.ForeignKey("protocoltypes.id"))
-    name = db.Column(db.String)
+    name = db.Column(db.Text)
 
     def get_parent(self):
         return self.protocoltype
@@ -825,7 +825,7 @@ class MeetingReminder(DatabaseModel):
     days_before = db.Column(db.Integer)
     send_public = db.Column(db.Boolean)
     send_private = db.Column(db.Boolean)
-    additional_text = db.Column(db.String)
+    additional_text = db.Column(db.Text)
 
     def get_parent(self):
         return self.protocoltype
@@ -836,10 +836,10 @@ class Error(DatabaseModel):
     __model_name__ = "error"
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
-    action = db.Column(db.String)
-    name = db.Column(db.String)
+    action = db.Column(db.Text)
+    name = db.Column(db.Text)
     datetime = db.Column(db.DateTime)
-    description = db.Column(db.String)
+    description = db.Column(db.Text)
 
     def get_parent(self):
         return self.protocol
@@ -857,8 +857,8 @@ class TodoMail(DatabaseModel):
     __tablename__ = "todomails"
     __model_name__ = "todomail"
     id = db.Column(db.Integer, primary_key=True)
-    name = db.Column(db.String, unique=True)
-    mail = db.Column(db.String)
+    name = db.Column(db.String(128), unique=True)
+    mail = db.Column(db.Text)
 
     def get_formatted_mail(self):
         return "{} <{}>".format(self.name, self.mail)
@@ -869,9 +869,9 @@ class OldTodo(DatabaseModel):
     __model_name__ = "oldtodo"
     id = db.Column(db.Integer, primary_key=True)
     old_id = db.Column(db.Integer)
-    who = db.Column(db.String)
-    description = db.Column(db.String)
-    protocol_key = db.Column(db.String)
+    who = db.Column(db.Text)
+    description = db.Column(db.Text)
+    protocol_key = db.Column(db.Text)
 
 
 class DefaultMeta(DatabaseModel):
@@ -879,9 +879,9 @@ class DefaultMeta(DatabaseModel):
     __model_name__ = "defaultmeta"
     id = db.Column(db.Integer, primary_key=True)
     protocoltype_id = db.Column(db.Integer, db.ForeignKey("protocoltypes.id"))
-    key = db.Column(db.String)
-    name = db.Column(db.String)
-    value = db.Column(db.String)
+    key = db.Column(db.Text)
+    name = db.Column(db.Text)
+    value = db.Column(db.Text)
     internal = db.Column(db.Boolean)
     prior = db.Column(db.Boolean, default=False, nullable=False)
 
@@ -894,8 +894,8 @@ class Meta(DatabaseModel):
     __model_name__ = "meta"
     id = db.Column(db.Integer, primary_key=True)
     protocol_id = db.Column(db.Integer, db.ForeignKey("protocols.id"))
-    name = db.Column(db.String)
-    value = db.Column(db.String)
+    name = db.Column(db.Text)
+    value = db.Column(db.Text)
     internal = db.Column(db.Boolean)
 
     def get_parent(self):
@@ -906,7 +906,7 @@ class Like(DatabaseModel):
     __tablename__ = "likes"
     __model_name__ = "like"
     id = db.Column(db.Integer, primary_key=True)
-    who = db.Column(db.String)
+    who = db.Column(db.Text)
 
 
 class LikeProtocolAssociation(DatabaseModel):