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You can delete (drop) a primary key in SQL Server by using SQL Server Management Studio or Transact-SQL. When the primary key is deleted, the corresponding index is deleted. Can a primary key be dropped in MySQL? You can drop a primary key in MySQL using the ALTER TABLE statement. What happens when you drop a primary key? If you …
A database is any collection of data. The data in a database is usually organized in such a way that the information is easily accessible. A schema is basically a formal description of how a database is formed and where everything is located. What is a schema in a DB? A database schema represents the logical configuration of all or …
COMMIT permanently saves the changes made by the current transaction. ROLLBACK undo the changes made by the current transaction. 2. The transaction can not undo changes after COMMIT execution. Can we rollback after commit in SQL Server? Once SQL Server commits a transaction, you cannot run the ROLLBACK statement. How do I rollback a commit in SQL? You just have …
Note: MySQL Installer is 32 bit, but will install both 32 bit and 64 bit binaries. Is MySQL only 32 bit? Note: MySQL Installer is 32 bit, but will install both 32 bit and 64 bit binaries. Is MySQL available for 64 bit? MySQL is available for Microsoft Windows, for both 32-bit and 64-bit versions. Does MySQL 32 bit work …
MySQL is available for Microsoft Windows, for both 32-bit and 64-bit versions. Is MySQL 32 or 64-bit? Although MySQL Installer is a 32-bit application, it can install both 32-bit and 64-bit binaries. Is MySQL community only 32 bit? MySQL Installer is 32-bit but will install both 32 bit and 64-bit binaries. Is MySQL 32 or 64-bit? Although MySQL Installer is …
Although MySQL Installer is a 32-bit application, it can install both 32-bit and 64-bit binaries. Does MySQL have 64-bit? MySQL is available for Microsoft Windows, for both 32-bit and 64-bit versions. For supported Windows platform information, see https://www.mysql.com/support/supportedplatforms/database.html. Is MySQL community only 32 bit? MySQL Installer is 32-bit but will install both 32 bit and 64-bit binaries. What is the …
The Coalesce in SQL function evaluates the arguments in the specified order and always returns the first non-null value from the argument list. SYNTAX: COALESCE ( expression [1..n] ) What is use of coalesce in SQL? Definition and Usage The COALESCE() function returns the first non-null value in a list. What is the difference between coalesce () & Isnull ()? …
You cannot ROLLBACK TRUNCATE Simply, you cannot rollback a transaction if it is already committed but you can do something else to get the data back (or at least some parts of it). When you execute the TRUNCATE statement, your data is still in the MDF file. Can we rollback truncate and DELETE? The operation cannot be rolled back. DROP …
A domain is essentially a data type with optional constraints (restrictions on the allowed set of values). The user who defines a domain becomes its owner. If a schema name is given (for example, CREATE DOMAIN myschema. mydomain … ) then the domain is created in the specified schema. What is a domain in database? Domains are data type definitions …
The term “drop” refers to an action taken by a student during the drop period to discontinue enrollment in a course. The term “withdraw” refers to an action taken by a student to discontinue enrollment in a course after the drop period but prior to the withdrawal deadline. What is the difference of withdraw and drop? The term “drop” refers …