A primary key, also called a primary keyword, is a column in arelational databasetable that's distinctive for each record. It's aunique identifier, such as a driver's license number, telephone number with area
Structured Query Language (SQL) is a standardized programming language that is used to managerelational databasesand perform various operations on the data in them. Initially created in the 1970s, SQL is regularly used not only by database administrators but also by developers writing data integratio...
Unique identifiers are one of the fundamental blocks of data modeling and well as data consumption. Every table modeling starts with a unique business key / identity key / surrogate key, etc. The impact of a unique identifier becomes more evident when the need is to consolidate common business ...
Work done in NDB 8.0.20 allows many outer joins and semijoins, and not only those using a primary key or unique key lookup, to be pushed down to the data nodes (see Engine Condition Pushdown Optimization). Outer joins using scans which can now be pushed include those which meet the fo...
In addition, this release of SSMA for SAP ASE provides fixes that: Address accessibility issues Add basic support for hierarchyid type in SQL Server SSMA v8.2 The v8.2 release of SSMA for SAP ASE is enhanced with a targeted set of fixes designed to improve quality and conversion metrics, as...
As the name suggests, MySQL is a SQL-based relational database designed to store and manage structured data. In recent years, however, Oracle added additional support, including for the popular JSON data type. Key Takeaways In 2024, MySQL retains its mantle as the world’s most popular open...
The new Stretch Database feature lets you dynamically, securely archive data from a local SQL Server database to an Azure SQL database in the cloud. SQL Server automatically queries both local and remote data in the linked databases. In-memory OLTP: Now supports FOREIGN KEY, UNIQUE and CHEC...
The new Stretch Database feature lets you dynamically, securely archive data from a local SQL Server database to an Azure SQL database in the cloud. SQL Server automatically queries both local and remote data in the linked databases. In-memory OLTP: Now supports FOREIGN KEY, UNIQUE and CHEC...
The new Stretch Database feature lets you dynamically, securely archive data from a local SQL Server database to an Azure SQL database in the cloud. SQL Server automatically queries both local and remote data in the linked databases. In-memory OLTP: Now supports FOREIGN KEY, UNIQUE and CHEC...
In either case, the user is responsible for making sure that the tag is unique to a given replication topology. The original UUID:NUMBER format for GTIDs continues to be supported unchanged, as implemented in previous versions of MySQL; changes to existing replication setups using GTIDs are ...