in your own words. how can you explain SQL environment?
1. in your own words. how can you explain SQL environment?
Answer:
In simple words, data can be facts related to any object in ... It uses SQL as the standard query language. Next.
Explanation:
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2. is there a way we can directly execute the SQL command by simply typing the SQL command?
Answer:
In some applications, having hard coded SQL statements is not appealing because of the dynamic nature of the queries being issued against the database server. Because of this, sometimes there is a need to dynamically create a SQL statement on the fly and then run that command. This can be done quite simply from the application perspective where the SQL statement is built on the fly whether you are using ASP.NET, ColdFusion or any other programming language. But how do you do this from within a SQL Server stored procedure?
How to build dynamic SQL statement in SQL Server
SQL Server offers a few ways of running a dynamically built SQL statement. Here are a few options:
Writing a query with parameters
Using EXEC
Using sp_executesql
We will use the AdventureWorks database for the below examples.
Things to Note
Although generating SQL code on the fly is an easy way to dynamically build statements, it does have some drawbacks.
One issue is the potential for SQL Injection where malicious code is inserted into the command that is being built. The examples below are very simple to get you started, but you should be aware of SQL Injection and ways to prevent it by making sure your code is robust to check for any issues before executing the statement that is being built.
Another issue is the possible performance issues by generating the code on the fly. You don't really know how a user may use the code and therefore there is a potential for a query to do something you did not expect and therefore become a performance issue. So once again, you should make sure your code checks for any potential problems before just executing the generated code.
i hope its help
3. Evaluate the following SQL commandSELECT employee_id, hire_date, department_name FROM employees, departmentsWHERE departments.department_id = employees.department_idSelect one:a.The SQL command will produce an error.b.The SQL command will give an incorrect output.c.The SQL command should have ALIAS for the table to produce a correct output.d.The SQL command will produce a correct output.
Answer:
Explanation:
D. This should produce a correct output.
I'm making a number of assumptions here. More specifically, that this is likely referring to the standard MySQL syntax (or identical in this context) and that both tables "employees" and "departments" contain columns "employee_id", "hire_date", and "department_name". If one or both of these assumptions are wrong, then the answer should be A (error).
SELECT employee_id, hire_date, department_name
FROM employees, departments
WHERE departments.department_id = employees.department_id
This WHERE line compares the department_id from the "departments" table and "employees" table. It will only SELECT the "employee_id", "hire_date" and "department_name" of the records FROM both tables IF their "department_id" values are the same.
4. write different syntax of SQL and explain
Answer:
Indi kopo kayu na intindihan
5. What is a View in SQL?
View SQL
In a database, a view is the result set of a stored query on the data, which the database users can query just as they would in a persistent database collection object. This pre-established query command is kept in the database dictionary. Unlike ordinary base tables in a relational database, a view does not form part of the physical schema: as a result set, it is a virtual table computed or collated dynamically from data in the database when access to that view is requested. Changes applied to the data in a relevant underlying table are reflected in the data shown in subsequent invocations of the view. In some NoSQL databases, views are the only way to query data.
6. all programs written in sql are
Answer:
it is a part of system R
Explanation:
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7. Evaluate the following PL/SQL. 1 DECLARE 2 v_employee_id employees.employee_id%TYPE := 114; 3 BEGIN 4 DELETE employees WHERE employee_id = v_employee_id; 5 END;Select one:a.To execute successfully delete line 1,2,3,5.b.The PL/SQL will produce an error in line 2.c.The PL/SQL will delete employee number 114.d.The PL/SQL will produce an error in line 4.
Answer:
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Answer:
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8. A group of SQL statements that can be called by name
Answer:
A named group of SQL statements that can be executed in a database is calledA.
.Subroutine
.SubroutineB.
.SubroutineB.Formula
.SubroutineB.FormulaC.
.SubroutineB.FormulaC.Stored procedure
.SubroutineB.FormulaC.Stored procedureD.
.SubroutineB.FormulaC.Stored procedureD.Method
9. 2. What is the meaning of SQL?
Answer:
structured query language
WHAT IS SQL?
structured query language
10. what does sql stands for
Answer:
Structured Query Language
SQL stands for Structured Query Language. SQL lets you access and manipulate databases. SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of the International Organization for Standardization (ISO) in 1987.
11. how to create a database using microsoft SQL?
Answer:
Explanation:
Open Microsoft SQL Management Studio.
Connect to the database engine using database administrator credentials.
Expand the server node.
Right click Databases and select New Database.
Enter a database name and click on OK to create the database.
12. what is the original purpose of SQL?
Explanation:
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. SQL statements are used to perform tasks such as update data on a database, or retrieve data from a database.
13. How does SQL affect the success of a business?
Answer:
______________________________________________________________________________________
Explanation:
14. What does SQL stand for?
Answer:
"sequel"; Structured Query Language
Explanation:
Structured Query Language is a computer language that we use to interact with a relational database. SQL is a tool for organizing, managing and retrieving archived data from a computer database.
15. Why SQL is important inmanaging database?
Answer:
SQL allows a database administrator to define the organization and structure of stored data and the relationships amongst different stored data items. Data retrieval. SQL helps an application or user program to fetch stored data from a computer database and make use of it.
16. what is the difference between SQL and API
Answer:
There is no difference both use for same purpose. Akib If there is no similarity then there is no difference but you can say there is relation with API and SQL queries. API use to get data from database through server side to client side. So SQL queries play important role in API.
17. what is the difference between SQL and API?
There is no difference both use for same purpose. Akib If there is no similarity then there is no difference but you can say there is relation with API and SQL queries. API use to get data from database through server side to client side. So SQL queries play important role in API.
18. what are the SQL data types and its functions?
Answer:
Numeric data types such as int, tinyint, bigint, float, real etc.
Date and Time data types such as Date, Time, Datetime etc.
Character and String data types such as char, varchar, text etc.
Unicode character string data types, for example nchar, nvarchar, ntext etc.
Binary data types such as binary, varbinary etc.
Explanation:
19. The following are capabilities of SQL SELECT
Capabilities of the SELECT Statement
Data retrieval from data base is done through appropriate and efficient use of SQL. Three concepts from relational theory encompass the capability of the SELECT statement: projection, selection, and joining.
Projection: A project operation selects only certain columns (fields) from a table. The result table has a subset of the available columns and can include anything from a single column to all available columns.Selection: A select operation selects a subset of rows (records) in a table (relation) that satisfy a selection condition. The ability to select rows from out of complete result set is called Selection. It involves conditional filtering and data staging. The subset can range from no rows, if none of the rows satisfy the selection condition, to all rows in a table.Joining: A join operation combines data from two or more tables based on one or more common column values. A join operation enables an information system user to process the relationships that exist between tables. The join operation is very powerful because it allows system users to investigate relationships among data elements that might not be anticipated at the time that a database is designed.20. explain the microsoft SQL server
Answer:
SQL Server is a database server by Microsoft. The Microsoft relational database management system is a software product which primarily stores and retrieves data requested by other applications. ... SQL is a special-purpose programming language designed to handle data in a relational database management system.
Explanation:
Hope it helps
Answer:
SQL Server is a database server by Microsoft. The Microsoft relational database management system is a software product which primarily stores and retrieves data requested by other applications. ... SQL is a special-purpose programming language designed to handle data in a relational database management system.
Microsoft SQL Server (MSSQL) is widely used in enterprise deployments. MSSQL is a scalable data platform which includes several ETL (Extract, Transform and Load) tools and reporting services where data can be added, modified and queried using a standardized structured query language (SQL).
21. is it important to know the basic operations in SQL? Explain.
Answer: Yes, Because it allows you to interact with your datasets using the interface so you can filter, order and modify your data values directly from Builder. Sometimes it will be useful to use the SQL view to perform more advanced tasks like formatting your data joining different tables.
Explanation: Hope this works For you
22. Regular expressions and sql belong to which paradigm?
Answer:
Downloading Photo
Step-by-step explanation:
Ayan po:)
23. Evaluate the following SQL command SELECT * FROM jobs WHERE job_title LIKE 'Manager%' Select one: a. The SQL command will produce an error. b. The SQL command will display all employees with Manager position c. No records will be displayed d. The SQL command will display all records in the database
Answer:
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24. what is the function of sql server
Answer:
Yan po ang answer
yan lang din po ang nasearch ko
Explanation:
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salamat
Answer:
Return information about the database and database objects. Return information about users and roles. Perform operations on a string (char or varchar) input value and return a string or numeric value. Perform operations and return information about values, objects, and settings in an instance of SQL Server.
Explanation:
Hope it will help you
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25. how i create table courses in sql
Answer:
huh ano po ibig sabihin nyo po?
26. The SQL View allows you to do the following:
Answer:
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27. 1. How does tuning in PL/SQL work?2. What is the importance of tuning in PL/SQL?paki answer po pls.
Answer:
1.When to Tune PL/SQL Code
The information in this chapter is especially valuable if you are responsible for:
Programs that do a lot of mathematical calculations. You will want to investigate the datatypes PLS_INTEGER, BINARY_FLOAT, and BINARY_DOUBLE.
Functions that are called from PL/SQL queries, where the functions might be executed millions of times. You will want to look at all performance features to make the function as efficient as possible, and perhaps a function-based index to precompute the results for each row and save on query time.
Programs that spend a lot of time processing INSERT, UPDATE, or DELETE statements, or looping through query results. You will want to investigate the FORALL statement for issuing DML, and the BULK COLLECT INTO and RETURNING BULK COLLECT INTO clauses for queries.
Older code that does not take advantage of recent PL/SQL language features. (With the many performance improvements in Oracle Database 10g, any code from earlier releases is a candidate for tuning.)
Any program that spends a lot of time doing PL/SQL processing, as opposed to issuing DDL statements like CREATE TABLE that are just passed directly to SQL. You will want to investigate native compilation. Because many built-in database features use PL/SQL, you can apply this tuning feature to an entire database to improve performance in many areas, not just your own code.
Before starting any tuning effort, benchmark the current system and measure how long particular subprograms take. PL/SQL in Oracle Database 10g includes many automatic optimizations, so you might see performance improvements without doing any tuning.
2.How PL/SQL Optimizes Your Programs
In releases prior to 10g, the PL/SQL compiler translated your code to machine code without applying many changes for performance. Now, PL/SQL uses an optimizing compiler that can rearrange code for better performance.
You do not need to do anything to get the benefits of this new optimizer. It is enabled by default. In rare cases, if the overhead of the optimizer makes compilation of very large applications take too long, you might lower the optimization by setting the initialization parameter PLSQL_OPTIMIZE_LEVEL=1 instead of its default value 2. In even rarer cases, you might see a change in exception behavior, either an exception that is not raised at all, or one that is raised earlier than expected. Setting PL_SQL_OPTIMIZE_LEVEL=0 prevents the code from being rearranged at all.
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28. What causes most errors in a database? * a. sqlb. human error c. sql server d. Internet access
C. SQL SERVER
EXPLANATION:
—, Causes and Resolutions · Bugs in SQL server itself · Abrupt system shutdown while the database is opened
HOPE IT HELP
29. Evaluate the following PL/SQL. 1 DECLARE 2 v_employee_id employees.employee_id%TYPE := 114; 3 BEGIN 4 DELETE employees WHERE employee_id = v_employee_id; 5 END;Select one:a.The PL/SQL will produce an error in line 4.b.The PL/SQL will produce an error in line 2.c.The PL/SQL will delete employee number 114.d.To execute successfully delete line 1,2,3,5.
Answer:
12563739
Explanation:
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30. what is the difference between SQL and MySQL?
Answer:
What is the difference between SQL and MySQL? In a nutshell, SQL is a language for querying databases and MySQL is an open source database product. SQL is used for accessing, updating and maintaining data in a database and MySQL is an RDBMS that allows users to keep the data that exists in a database organized.
Explanation:
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