The PgAdmin is a popular tool for the open-source database – Postgres or PostgreSQL. It provides various graphical user interfaces for managing the Postgres relational database. It simplifies database management activities such as database creation, maintenance, database objects export\import, query tool, backup\restores, managing cluster objects.
In a multi-user environment, it is essential to maintain truncation concurrency. These locks are in-memory structures of 96 bytes in size. Their role is to maintain data integrity, consistency, concurrency control for each transaction. SQL Server follows the ACID test for each transaction.
The Common Table Expression aka CTE in SQL Server provides a temporary result set in T-SQL. You can refer to it within a SQL Select, SQL Insert, SQL Delete, or SQL Update statement.
The option is available from SQL Server 2005 onwards, helping the developers write complex and long queries involving many JOINs, aggregation, and data filtering. Usually, developers use subqueries for writing T-SQL codes, and SQL Server stores these CTE in memory temporally until the query execution finishes. Once the query is finished, it is removed from memory.
Relational databases represent an organization’s data in tables that use columns with different data types allowing them to store valid values. Developers and DBAs need to know and understand the appropriate data type for each column for better query performance.
This article will deal with the popular data types VARCHAR() and NVARCHAR(), their comparison, and performance reviews in SQL Server.
Amazon Web Service, aka AWS, is a leading cloud infrastructure provider for storing your servers, applications, databases, networking, domain controllers, and active directories in a widespread cloud architecture. AWS provides a Simple Storage Service (S3) for storing your objects or data with (119’s) of data durability. AWS S3 is compliant with PCI-DSS, HIPAA/HITECH, FedRAMP, EU Data Protection Directive, and FISMA that helps satisfy regulatory requirements.
A synonyms in SQL Server are database objects that give an alternative name to the database objects existing locally or on the remote server. Also, they provide an abstraction layer to protect the application from any changes in the base object.
SQL Server Express is a free lightweight edition of SQL Server with limited functionality, available for all versions starting from SQL Server 2005. You can use it for small data-driven applications and independent application vendors.
In mathematics, the Average value represents the middle value that we calculate by dividing the sum of all values by the number of values.
The data type represents an attribute that stores integer, character, data time, binary data. Suppose you have a web application for recording the users’ feedback for various questions. It contains multiple dichotomous questions and a few textbox-based questions, such as remarks. On the backend, these responses get stored in an SQL table.
