by Santhinesh Nagendran | May 8, 2023 | KnowledgeBase, MySQL
What is MySQL ReplicaSet ?Environment OverviewMandatory Configuration Needed for ReplicaSetMySQLShell Pre-checksConfigure both the nodes using dba.configureReplicaSetInstance()Ways of Setting up ReplicaSetReplicaSet From ScratchAdopting an existing GTID based...
by Santhinesh Nagendran | May 5, 2023 | General, KnowledgeBase, MySQL
What is Primary Key ?Issues due to tables without primary keyHow do we end up creating tables without primary key by mistake ?Performance issues caused by tables missing primary key ?How can we find the tables without primary key ?How can we restrict creation of...
by Santhinesh Nagendran | Mar 6, 2023 | KnowledgeBase, MySQL
We were representing one of our audit report to one of our customers and he had some interesting question about the mysql default system users. So we thought it would be worth sharing our learning as a short note. The questions were like what are these users called...
by Selvaraj B | Aug 22, 2022 | Databases, General, KnowledgeBase, MySQL
Concurrency is one of the key features of Innodb and an interesting feature to understand to tune database systems. As per definition the concurrency is nothing but execution of multiple instructions in a sequence at the same time, and there are some commonly known...
by genexdb | Nov 9, 2021 | Databases, General, KnowledgeBase, PostgreSQL
PostgreSQL is another most important open source database besides MySQL in RDBMS world. In this blog we have tried to cover a 3 node PostgreSQL replication setup in Centos 7. Majority of the steps would just remain the same for Ubuntu as well except for the yum based...
by genexdb | Oct 8, 2021 | General, KnowledgeBase, MySQL
Introduction ENUM is a string object with a value chosen from a list of permitted values defined at the time of column creation. ENUM values are represented as integers internally. Enum datatype is chosen whenever a column has a limited possible data values like...
