VLDB 2021: Registration modes and rules

This page describes the types of attendance, virtual and in-person, as well as the rules for switching between them. At the bottom of the page, an online calculator estimates the registration fee for different combinations of registration options.

Registration options: Virtual and In-person

As we understand the uncertainty during these unprecedented times, we offer our participants the flexibility of changing their registration until August 1st and upon availability from virtual to in-person or vice versa. So, you have two options:

  1. If you are sure about traveling to Copenhagen, then register for in-person event and secure your place for face-to-face meeting. This will also include the benefits of the digital platform. The process is the following:
    1. Select in-person as the registration type that you are interested in and complete your registration (incl. payment).
    2. Then, until August 1st you will be able to:
      1. Move your in-person registration to virtual. The difference between both rates will be refunded after the conference.
      2. Keep your in-person registration.
    3. Please note that in-person registration cannot be totally cancelled; you will only be able to change your in-person event registration to virtual in case you want to.

  2. If you are still unsure about traveling to Copenhagen due to the pandemic, then first register for virtual attendance and you can later upgrade to in-person event if necessary. The process is the following:
    1. Select virtual as the registration type that you are interested in and complete your registration (incl. payment).
    2. Then, until August 1st you will be able to:
      1. Upgrade your virtual to in-person registration and benefit from both the face-to-face meeting and the digital platform. The difference between the rates must be paid when the change is confirmed by Kuoni Congress.
      2. Keep your virtual registration.
    3. Please note that virtual registration cannot be totally cancelled; you will only be able to change your virtual event registration to in-person in case you want to.

To change your registration both from virtual to in-person or vice versa, please send an e-mail to Kuoni Congress indicating the change you want to make: vldb2021@kuoni-congress.com.

For further details about the registration rates and rules, please see below.

Registration modification rules

VLDB 2021 is currently being planned as a hybrid conference with physical presence as well as with a virtual component. As we understand the uncertainty during these unprecedented times, we offer our participants the flexibility of changing their registration until August 1st and, upon availability, from virtual to in-person or vice versa.

Specifically, the following changes are allowed:

  • From virtual to any in-person option (full access / conference only / one workshop / one day).
  • From any in-person option to virtual.

Changing among in-person options is not allowed.

Please note that only one change is allowed per participant. If you are not sure yet, we recommend that you first register for the virtual option and then upgrade to in-person option by August 1st. The fee that you already paid for the virtual option will be deducted from the in-person fee.

Upon request, the VLDB Conference 2021 technical secretariat will change your initial virtual registration to an in-person registration or vice versa.

For virtual to in-person you will be asked to pay the remaining amount between virtual registration and in-person registration before the conference starting date. (i.e. for category full access early regular, 850€, the requested remaining amount will be 650€, which is the difference between virtual registration, 200€, and full access early regular).

For in-person to virtual we will refund the difference amount withholding 5€ as an administrative fee (i.e. for category 850€, the amount to be refunded will be the difference between 850€ and virtual registration 200€, less 5€ administrative fee = 645€). Please note that all refunds will be made after the conference.

Deadline to change from virtual to in-person or from in-person to virtual registration, is August 1st.

Registration Calculator

Given the several registration options that we offer, we provide the following online calculator which provides the estimated registration cost, based on the options that you choose. Please make sure to confirm your rate here.

Please select your professional status:



Please select whether you would like to register for Virtual (what's included?) or In-person (what's included?) participation.



Registration Link

You can register here: https://kuonicongress.eventsair.com/vldb2021/regvldb.