You asked: What is the advantage of using the type attribute to declare a PL SQL type?

The %TYPE attribute, used in PL/SQL variable and parameter declarations, is supported by the data server. Use of this attribute ensures that type compatibility between table columns and PL/SQL variables is maintained.

What are the advantages of using PL SQL?

PL/SQL has these advantages:

  • Tight Integration with SQL.
  • High Performance.
  • High Productivity.
  • Portability.
  • Scalability.
  • Manageability.
  • Support for Object-Oriented Programming.
  • Support for Developing Web Applications.

What are the advantages of PL SQL What are the advantages of using triggers?

These are the following advantages of Triggers:

  • Trigger generates some derived column values automatically.
  • Enforces referential integrity.
  • Event logging and storing information on table access.
  • Auditing.
  • Synchronous replication of tables.
  • Imposing security authorizations.
  • Preventing invalid transactions.

What is the advantage of using the road type data type?

What is the advantage of using the %ROWTYPE datatype? a. It is useful to retrieve an entire row from a table. If you do not use the %ROWTYPE datatype, then you have to declare variables for each column separately.

IT IS INTERESTING:  Best answer: How do I install Java on iPhone?

What are the advantages and disadvantages of PL SQL?

Features & Advantages of PL/SQL

  • Better performance, as SQL is executed in bulk rather than a single statement.
  • High Productivity.
  • Tight integration with SQL.
  • Full Portability.
  • Tight Security.
  • Supports Object Oriented Programming concepts.
  • Scalability and Manageability.
  • Supports Web Application Development.

What is PL SQL Advantages of PL SQL?

PL/SQL allows sending an entire block of statements to the database at one time. This reduces network traffic and provides high performance for the applications. PL/SQL gives high productivity to programmers as it can query, transform, and update data in a database.

What is data type in PL SQL?

PL/SQL has two kinds of data types: scalar and composite. The scalar types are types that store single values such as number, Boolean, character, and datetime whereas the composite types are types that store multiple values, for example, record and collection.

What are the advantages and disadvantages of using triggers in a database?

Pros and Cons of SQL Server Triggers

  • Triggers are easy to code. …
  • Triggers allow you to create basic auditing. …
  • You can call stored procedures and functions from inside a trigger.
  • Triggers are useful when you need to validate inserted or updated data in batches instead of row by row.

What are the advantage of using triggers?

Some of the prominent advantages of triggers are as follows:

  • Helps us to automate the data alterations.
  • Allows us to reuse the queries once written.
  • Provides a method to check the data integrity of the database.
  • Helps us to detect errors on the database level.
  • Allows easy auditing of data.
IT IS INTERESTING:  How do I start writing in SQL?

What is the difference between SQL and Plsql?

SQL is data oriented language. PL/SQL is application oriented language. SQL is used to write queries, create and execute DDL and DML statments. PL/SQL is used to write program blocks, functions, procedures, triggers and packages.

What is the advantage of using the %type attribute?

The %TYPE attribute, used in PL/SQL variable and parameter declarations, is supported by the data server. Use of this attribute ensures that type compatibility between table columns and PL/SQL variables is maintained.

Is used to declare a variable according to a database column definition?

Using the %TYPE Attribute to Declare Variables

The %TYPE attribute provides the datatype of a variable or table column. This is particularly useful when declaring variables that will hold values of a table column.

What is difference between type and Rowtype?

%TYPE provides the data type of a variable or a database column to that variable. %ROWTYPE provides the record type that represents a entire row of a table or view or columns selected in the cursor.

What is PL SQL in Rdbms?

PL/SQL stands for “Procedural Language extensions to the Structured Query Language”. SQL is a popular language for both querying and updating data in the relational database management systems (RDBMS). PL/SQL adds many procedural constructs to SQL language to overcome some limitations of SQL.

What is PL SQL architecture?

PL/SQL architecture defines how the PL/SQL blocks are executed in Oracle. Oracle provides PL/SQL engine that executes the Procedural Language part of a block. When an application program or a user invokes a PL/SQL block, it is submitted to the PL/SQL engine available locally.

IT IS INTERESTING:  Does Cassandra support SQL queries?

What is the advantage of stored procedure in SQL Server?

By grouping SQL statements, a stored procedure allows them to be executed with a single call. This minimizes the use of slow networks, reduces network traffic, and improves round-trip response time.