Take care of the queries


There are always several ways to write a query, and several ways to get the same result. But not all ways are necessarily equivalent. Analyzing and measuring are the two key words to understand what’s going on under the hood and to code in the most efficient way. This session will illustrate these different options with concrete examples and will propose a study of the exchanges generated with the server.

1 hour + Q/A
Online Training
$60 USD


At  the end of this session you will be able to:

  • Understand the importance of choices when faced with different coding options.
  • Determine which option is the most adapted to a given context.

What you will learn

  • The multiple possible syntaxes to perform queries in the database using the ORDA language exclusively
  • How to analyze queries with the tools provided in 4D.

Who should attend this session?

  • 4D developers who are interested in understanding how to correctly write queries using ORDA.
  • 4D developers who are comfortable with ORDA.

Recommended Sessions

The fundamentals of ORDA (Object Relational Data Access).

Is your application ready for ORDA (Object Relational Data Access)?

Session materials

  • Example application source code
  • Video recording of the session

Pricing in local currencies

$60 USD - 60€ - £55 GBP - $95 CAD - 600 kr - ¥7300 JPY tax excl.
$99 AUD inc GST - CHF 89 tax inc.

After registering, you will be invoiced for the training in accordance with the appropriate sales conditions.

Session time

US Pacific Time  (GMT-8)    •  08:00 am - 9:20 am           (San Jose, San Francisco)
US Central Time (GMT-6)    • 10:00 am - 11:20 am          (Chicago)
US Eastern Time (GMT-5)   • 11:00 am - 12:20 pm          (Boston, New-York)

In other time zones:
(GMT+1) • 05:00 pm - 06:20 pm                                    (Munich, Paris, Brussels, Madrid, Roma)
(GMT)     • 04:00 pm - 05:20 pm                                    (London, Lisbon)
Argentina Time (GMT-3) • 01:00 pm - 02:20 pm            (Buenos Aires)
AEDT (GMT+11) •  03:00 am - 04:20 am                         (Melbourne)


03 Dec 20
Online Training
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14 Jan 21
Online Training
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