PgConf.Russia 2020

Many businesses which use Database management systems like Oracle, DB2 & MS SQL are unreliable these days. Moreover, the costs incurred in maintaining these systems and its product licenses keeps on increasing. As the competitors are migrating over to the new technologies and tools available in the market, it is necessary for these businesses to migrate to new environment which is efficient, consistent and reliable to stay in the market and the technologies used in the current environment have become obsolete or no longer serve the business purpose. PostgreSQL has emerged as a top open-source RDBMS software. Since there is no licensing cost associated with it most of the companies are planning to migrate the databases which are currently running on other RDBMS like Oracle, DB2, MS SQL server to PostgreSQL. This report summarizes the various methodologies, procedures and techniques involved in successfully migrating the data from Oracle to PostgreSQL & DB2 to PostgreSQL. Migration is not a simple effort there should be proper planning and testing involved in this right from database connectivity to performance analysis. In this paper we are going to cover most of the steps which we need to consider before the migration and after the migration like choosing the correct tools for implementing the migration, time taken to migrate ,data compatibility, code conversion, application connectivity to database, database configuration parameters, performance analysis, replication setups, database monitoring, patching and backup strategies.

PostgreSQL is one of the most readily extensible databases in the world. Custom data types, aggregations, functions, and more can be easily and safely written in C.

This hands-on tutorial covers the basics of writing functions, data types, and aggregates in C. It is recommended (though not strictly required) that bring their own laptops and be prepared to actually try the exercises.

Topics covered include: 1. The PostgreSQL type system 2. Creating a simple custom type in C 3. Common errors for non-C programmers 4. Creating a simple aggregate in C

There will be many opportunities for questions and discussion through the tutorial.

Иногда даже просто подключиться к удаленному серверу - большая проблема. Особенно, если внутри организации высокие требования к безопасности, а ваша база данных находится на удаленном закрытом облачном сервере.

Мы поговорим о том, как легко и быстро подключаться к вашему PostgreSQL через SSH, SSL, jump серверы, proxy серверы, VPN и SSO (Kerberos/SSPI/LDAP/Active Directory). Для демонстрации мы будем использовать как консоль, так и UI-клиент и JDBC-драйвер. Мы постараемся охватить самые разнообразные случаи: от самых простых до сложных и безумных.

В этом небольшом мастер-кластер классе мы решим несколько программистских задач, в которых JSON эффективно расширяет возможности SQL, и превращает реляционную базу в почти готовый сервер приложений. :)
Рассмотрим использование агрегатов, как готовых, так и самодельных, попробуем извлечь пользу из рекурсивного характера JSON.