Why should a column in a Relational Database have a single purpose?
Consider a table in which a column represents a monetary value in some cases and a link to the value of another record in other cases so that we have the following:
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
How is data integrity maintained in a clustered environment when schema changes?
Scenario A clustered environment running N identical application nodes interacting with a single relational database. Problem Is it possible to upgrade the nodes to a new application version, which requires a new database schema and maintain data integrity in the database without any downtime in the application and without losing any data or ending up […]
Why don’t RDBMSes return joined tables in a nested format?
For example, say I want to fetch a User and all of his phone numbers and email addresses. The phone numbers and emails are stored in separate tables, One user to many phones/emails. I can do this quite easily:
Why don’t RDBMSes return joined tables in a nested format?
For example, say I want to fetch a User and all of his phone numbers and email addresses. The phone numbers and emails are stored in separate tables, One user to many phones/emails. I can do this quite easily:
Why don’t RDBMSes return joined tables in a nested format?
For example, say I want to fetch a User and all of his phone numbers and email addresses. The phone numbers and emails are stored in separate tables, One user to many phones/emails. I can do this quite easily: