Results for "Constraint Management"
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SQL Server me Default Constraint Maintenance System (Auto Fix + Logging + Rollback)
...ur dekhi hogi: Different tables me different default values Constraint naming random…
What are Constraints in SQL?
SQL में constraints डेटाबेस टेबल में डेटा को सुरक्षित और सही बनाए रखने के लिए उपयोग किए जाते हैं। ये टेबल में डेटा की वैधता (validity) और अखंडता (integrity…
How to find table column information by using SQL query
Comprehensive Guide to Fetching Table and Column Metadata with SQL Server Stored Procedures When working with databases, understanding the structure of tab…
SQL Server Administration – Management Tools Overview
Is section me hum mainly SQL Server ke management tools aur system databases ko samjhenge. SQL Server Management Tools Jab aap Microsoft SQL Server install…
Dynamic CREATE TABLE Script in SQL Server
DECLARE @TableName NVARCHAR(100) = 'Employee'; DECLARE @SQL NVARCHAR(MAX) = ''; DECLARE @PKCols NVARCHAR(MAX) = ''; -- Get Primary Key Column(s) SELECT @PK…
SQL Server Index Optimization Automation (Missing & Unused Index Management)
Pehle Basics — Index Hota Kya Hai? Simple bhaasha mein — index ek kitaab ka index page hota hai. Jaise tum dictionary mein "Zebra" dhundne ke liye seedha Z sec…
The ALTER TABLE statement in Microsoft SQL Server (MSSQL) and PostgreSQL
The ALTER TABLE statement in Microsoft SQL Server (MSSQL) and PostgreSQL is used to modify the structure of an existing table. It allows you to: Add, drop,…
SQL Server Management Studio (SSMS) – Complete Beginner Guide
SQL Server Management Studio Kya Hai? SQL Server Management Studio (SSMS) ek graphical interface (GUI tool) hai jisse aap SQL Server ke almost saare operat…
What is an Index? Explain its different types in SQL
✅ Index in SQL Server (इंडेक्स इन SQL सर्वर): Index SQL Server में एक database object (डेटाबेस ऑब्जेक्ट) है जो टेबल के डेटा को जल्दी से प्राप्त करने के लिए…
SYS and INFORMATION_SCHEMA
sys In Microsoft SQL Server, the sys schema is a special schema that contains system views and stored procedures that provide metadata about the SQL Server…
SQL Server Configuration Manager
Introduction Jab hum Microsoft SQL Server install karte hain , tab kuch important tools automatically install ho jate hain. Unme se ek bahut important tool…
Triggers in SQL server
A trigger in SQL is a special type of stored procedure that runs automatically when certain actions happen in a table or view . A trigger cannot be explici…
SQL Interview Q&A
Here are the questions along with their corresponding answers extracted from the provided context: What is SQL? SQL stands for Structured Query Language. I…
What is Managed and External table in Spark
In Apache Spark, both Managed and External tables are used to store the data. However, there are significant differences in how Spark manages the data for …
SQL Server Agent Alerts, Operators, Database Mail & Job Activity Monitor
Production environment me sirf jobs schedule karna hi kaafi nahi hota. Hume monitoring aur notification system bhi chahiye hota hai taaki agar koi job fail…
Database Backup in SQL Server
In SQL Server, taking a database backup is crucial for data recovery and protection. Here’s a basic guide on how to perform a database backup and restore i…
Table Partitioning in SQL Server
Table Partitioning एक advanced database concept है जिसका उपयोग बड़े tables को छोटे, manageable हिस्सों (partitions) में बाँटने के लिए किया जाता है। इससे pe…
What is catalog in Spark
In Apache Spark, the catalog refers to the internal management system that keeps track of all the metadata related to tables, databases, functions, and oth…
Database trigger to audit (Transaction logs) all of the DDL changes made to the Database
Create table DatabaseLog: CREATE TABLE [dbo].[DatabaseLog]( [DatabaseLogID] [int] IDENTITY(1,1) NOT NULL, [PostTime] [datetim…
Store Error Logs In SQL
Create Table for Error log: CREATE TABLE [dbo].[ErrorLog]( [ErrorLogID] [int] IDENTITY(1,1) NOT NULL, [ErrorTime] [datetime] …
MSDB Database in SQL Server
SQL Server me ek aur powerful system database hai jo automation + scheduling ka backbone hai: MSDB Database
What is MPP (Massively Parallel Processing)
Aaj ke time me: ✔ Data bahut fast grow ho raha hai ✔ Users bahut zyada queries run kar rahe hain ✔ Reports real-time chahiye Traditional database model is …
MDF, NDF, LDF, and Filegroups
🔹 1. Filegroup kya hota hai? 🔸 Definition: Filegroup SQL Server में logical storage unit hota hai, jisme ek ya zyada data files hoti hain. Ye filegroups …
What are Data warehouse, Data Lake ,data mining and DataMart and MetaData
Why a Data Warehouse? (Data Warehouse ki zarurat kyu hoti hai?) Aaj ke time me companies ka data multiple sources me store hota hai, jaise: • SQL Server da…
Understanding Stored Procedures in MSSQL
What is a Stored Procedure? A stored procedure is a group of SQL statements that are compiled and saved in the database. Instead of writing the same SQL qu…
Index Rebuilding vs. Reorganization in SQL Server
As a database grows, maintaining optimal performance becomes crucial. One of the key contributors to performance degradation over time is index fragmentati…
Database Permissions in SQL Server
In SQL Server, database permissions control what actions users can perform on specific database objects (like tables, views, and stored procedures). Permis…
Log Shipping (Ship Log) in SQL Server
Log Shipping in SQL Server is a high-availability feature that allows you to automatically send transaction log backups from a primary database on one serv…
What is Blocking in SQL, How to solve blocking, and Kill Session
What is Blocking in SQL? Blocking occurs in SQL Server when one query or transaction holds a lock on a resource (like a row or table) and prevents other qu…
PartitionBy() in PySpark
partitionBy() एक function है जो DataFrame को disk par likhne (write) के time par use hota hai. ये function pyspark.sql.DataFrameWriter class ka part hai. �…
Schema and Handling Corrupt data in PySpark
A schema in PySpark (and generally in data processing) defines the structure of a DataFrame, including the names and data types of each column. It serves a…
Logical Query Processing Phases in SQL
SQL query processing consists of several logical phases, which describe the order in which SQL statements are evaluated. These phases help in understanding…
Added columns in a table by dynamic ways
IF OBJECT_ID('AddedDynamicColumn','P') IS NOT NULL BEGIN DROP PROC AddedDynamicColumn END GO CREATE PROCEDURE AddedDynamicColumn AS BEGIN SELECT ED.empid,E…