What is PL/SQL?
PL/SQL stands for Procedural Language extension of SQL.
PL/SQL is a combination of SQL along with the procedural features of programming languages.
It was developed by Oracle Corporation in the early 90’s to enhance the capabilities of SQL.
The PL/SQL Engine:
Oracle uses a PL/SQL engine to processes the PL/SQL statements. A PL/SQL language code can be stored in the client system (client-side) or in the database (server-side).
MSSQL @@ROWCOUNT Tutorial
The @@ROW COUNT variable returns the number of rows read by the last executed statement. If any statement does not return any rows, then value of @@ROWCOUNT variable is set to zero.
MSSQL @@ROWCOUNT VARIABLE SYNTAX
Using @@ implies that it is a global variable. Also @@ROWCOUNT returns the value of int type i.e. the maximum no of rows @@ ROWCOUNT can return is 231 (2,147,483,647). For returning rows greater than this limit, ROWCOUNT_BIG function is used.
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Service accounts are all about security and access. So, for example, SQL Agent runs as a service and it can be configured (should be) to run under a service account. Let’s assume that you use Agent to run backups. Let’s also assume you backup to a shared file location on your network that’s not local to the machine you’re running SQL Agent on. You’ll need to ensure that the account configured for SQL Agent has access to that shared file location. While this may seem like work, what it in fact is doing is following the method of least access. That service account has to have access to that share, but it doesn’t need access to other file locations on your system, so you only give it what it needs and nothing more. Same thing applies to the other services and service accounts.
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This video explains on “How to Connect to SQL Server after Installation”
Applicable for SQL Server 2008, SQL Server 2008 R2, SQL Server 2012, SQL Server 2014 and SQL Server 2016
T0 resolve possible connection issues at basic level, ensure the following:
1. Verify and ensure correct server name is provided
2. Go to Run then services.msc then ensure SQL Server service for the respective instance is started.
Any clarifications: Please email to firstname.lastname@example.org
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SQL stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems. It is used to perform operations on the data present in database. SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database. Although most database systems use SQL, most of them also have their own additional proprietary extensions that are usually only used on their system. However, the standard SQL commands such as “Select”, “Insert”, “Update”, “Delete”, “Create”, and “Drop” can be used to accomplish almost everything that one needs to do with a database. SQL commands are divided into several different types, among them data manipulation language (DML) and data definition language (DDL) statements, transaction controls and security measures.
Some common relational database management systems that use SQL are: Oracle, Sybase, Microsoft SQL Server, Access, Ingres, etc.
SQL Server is a relational database management system (RDBMS) developed by Microsoft. This product is built for the basic function of storing retrieving data as required by other applications. It can be run either on the same computer or on another across a network. It is platform dependent. It is both GUI and command based software.
SQL Server is available in various editions. Some of the editions are:
- Business Intelligence
- Enterprise Evaluation
So, different enterprises like web development companies,, banks, outsourcing companies and many other uses RDBMS like (SQL server, Oracle) for smooth functioning of their business.
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A relation is in second normal form if it is in 1NF and every non key attribute is fully functionally dependent on the primary key.
It is in first normal form
All non-key attributes are fully functional dependent on the primary key
The First Normal form deals with the atomicity whereas the Second Normal Form deals with the relationship between the composite key columns and non-key columns.
To achieve the next progressive level your table should satisfy the requirement of First Normal Form then move towards the Second Normal Form.
Let see the example from above 1st Normal From
Table is not in Second Normal Form because the price and tax depends on the item, but not color.
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