Concurrency: Lost Updates
A closer look at the Read Committed Transaction Isolation Level and how it could allow Lost Update concurrency issues in SQL Server.
SQL Server
Concurrency: Dirty Reads
A closer look at the Read Uncommitted Transaction Isolation Level and how it could allow Dirty Reads in SQL Server.
What are Locks?
Explore SQL Server locks for transaction isolation to prevent data inconsistencies and ensure smooth database operations.
Transaction Isolation Levels
Transaction Isolation Levels are used to control data access concurrency. Concurrency controls can be Pessimistic or Optimistic.
What are Transactions?
Understand Transactions in SQL Server and their role in maintaining data integrity and enforcing the ACID properties.
Restore and Recovery
The restoration process of a SQL Server database passes through two phases: Restore and Recovery.
Writing T-SQL Queries
In late 2018, I recorded a series of videos for APRESS publishing on how to write T-SQL Queries. (I have linked to the O’Reilly website below.) There are four titles in the series with each title about 45 minutes in length. The first is how to write a T-SQL SELECT…
SQL Statement Categories
There are four main categories of statements used when writing T-SQL. What are the differences between each of these categories?
Writing a SELECT statement
What are the basics in writing a T-SQL SELECT? How to return columns and records from a table in SQL Server.
Filtering Records by Dates and Times
How to use the WHERE statement to filter records when the value is either a Date or a Time in a T-SQL statement.