Concurrency: Dirty Reads
A closer look at the Read Uncommitted Transaction Isolation Level and how it could allow Dirty Reads in SQL Server.
Deardurff
What are Locks?
What is a Lock? What is the process that transactions use to lock records to provide transaction isolation.
Transaction Isolation Levels
Transaction Isolation Levels are used to control data access concurrency. Concurrency controls can be Pessimistic or Optimistic.
What are Transactions?
The ACID properties of SQL Transactions, What are the different ACID properties of a transaction how they ensure that data is Atomic, Consistent, Isolated, and Durable.
Restore and Recovery
The restoration process of a SQL Server database passes through two phases: Restore and Recovery.
SQL Statement Categories
There are four main categories of statements used when writing T-SQL. What are the differences between each of these categories?
SQL Four-Part Names
The four-part names of SQL Server objects. How to reference objects in SQL Server by their four-part name and how to use it in a T-SQL statement.
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.
Columns and Records
In this post, we discuss what columns and records are in a SQL table including an explanation of objects and entities.
Filtering Records by Numbers
How to use the WHERE statement to filter records when the value is a number or integer data type in a T-SQL statement.