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Gouache painting of a three-stage water filtration stand on a workbench, with muddy water in the top tank, cloudier water in the middle tank, and clear water in a glass jar at the bottom, joined by short pipes and a vermilion valve on the last one.

Big Data Architecture Today: The Lakehouse and Medallion Layers

October 4, 2013
Pinal Dave
SQL Tips and Tricks
Batch, Change Data Capture, Cloud Computing, Data Warehousing, ETL

Big Data Architecture today is a pipeline with four jobs: ingest, store, process and serve, with governance underneath. This post explains the lakehouse, the bronze, silver and gold layers, batch and streaming, and where SQL Server 2025 fits.

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Gouache painting of storage objects in a row showing time passing: a bound paper ledger, a wooden card catalog drawer with a vermilion handle, a metal filing cabinet, a tall server rack with small lights, and a soft cloud floating above an open shelf.

Evolution of Big Data: From Flat Files to the Lakehouse

October 3, 2013
Pinal Dave
SQL Tips and Tricks
Cloud Computing, Data Warehousing, Database, Normalization

Evolution of Big Data follows one pattern: data grew, the old tool strained, and someone built the next one. This post walks from flat files and the relational model through warehouses and the cloud to the lakehouse.

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Two identical windmills on hills across a valley, sails turning in step

Geo-Replication for Azure SQL

February 18, 2013
Pinal Dave
SQL Tips and Tricks
Cloud Computing, SQL Azure, SQL High Availability, SQL Replication

Geo-replication for Azure SQL protects against regional failure through readable replicas or failover groups; learn lag, routing, and drills.

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A brass telescope on a harbor balcony aimed at a cargo ship anchored far out in the bay with containers on its deck.

Querying External Files With PolyBase

October 7, 2012
Pinal Dave
SQL Tips and Tricks
Cloud Computing, CSV, File format, SQL Server

PolyBase and SQL Server external tables expose CSV and Parquet files through schemas, while query plans show whether filters reduce remote work.

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An open suitcase on a bed, one side empty with its straps showing and the other side packed with folded linens under a red strap.

DACPAC vs BACPAC Quiz: Which File Carries Your Data?

January 13, 2012
Pinal Dave
SQL Puzzle
Cloud Computing, Schema, SQL Backup and Restore, SQL Migration

This DACPAC vs BACPAC Quiz asks which file moves a database with its rows to Azure SQL Database. The answer is the BACPAC. A tested script shows what each file describes, and the SqlPackage commands show how to use them.

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A skier riding a chairlift while a groomer prepares the slope below

Azure SQL Database for the On-Premises DBA

September 25, 2011
Pinal Dave
SQL Tips and Tricks
Cloud Computing, DBA, Query Store, SQL Azure

Azure SQL database for the on-premises DBA changes patching and backups, while leaving query tuning, access, cost, and recovery checks with your team.

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A rich courtyard shows several distinct well-organized repositories beneath one connected architectural shelter.

What Is SQL Azure? Azure SQL Database Explained

May 24, 2011
Pinal Dave
SQL Tips and Tricks
Cloud Computing, SQL Azure, SQL Server

Understand SQL Azure and Azure SQL Database. Compare managed databases, Managed Instance and SQL Server on Azure VMs by their roles.

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