Constraints are the rules enforced on the data columns of a table. These are used to limit the type of data that can go into a table. This ensures the accuracy and reliability of the data in the database.
Constraints can be divided into following two types:
Column level constraints : limits only column data
Table level constraints : limits whole table data
Aggregate Functions
An SQL JOIN clause combines columns from one or more tables in a relational database. It creates a set that can be saved as a table or used as it is. A JOIN is a means for combining columns from one (self-table) or more tables by using values common to each.
This presentation deals with the fundamentals of SQL, Installation and Database concepts. Presented by our team in Alphalogic Inc: https://www.alphalogicinc.com/
Constraints are the rules enforced on the data columns of a table. These are used to limit the type of data that can go into a table. This ensures the accuracy and reliability of the data in the database.
Constraints can be divided into following two types:
Column level constraints : limits only column data
Table level constraints : limits whole table data
Aggregate Functions
An SQL JOIN clause combines columns from one or more tables in a relational database. It creates a set that can be saved as a table or used as it is. A JOIN is a means for combining columns from one (self-table) or more tables by using values common to each.
This presentation deals with the fundamentals of SQL, Installation and Database concepts. Presented by our team in Alphalogic Inc: https://www.alphalogicinc.com/
Structured Query Language
SQL Commands:
• The standard SQL commands to interact with relational databases are CREATE, SELECT, INSERT, UPDATE, DELETE and DROP
PostgreSQL Tutorial For Beginners | EdurekaEdureka!
YouTube Link: https://youtu.be/-VO7YjQeG6Y
** MYSQL DBA Certification Training https://www.edureka.co/mysql-dba **
This Edureka PPT on PostgreSQL Tutorial For Beginners (blog: http://bit.ly/33GN7jQ) will help you learn PostgreSQL in depth. You will also learn how to install PostgreSQL on windows. The following topics will be covered in this session:
What is DBMS
What is SQL?
What is PostgreSQL?
Features of PostgreSQL
Install PostgreSQL
SQL Command Categories
DDL Commands
ER Diagram
Entity & Attributes
Keys in Database
Constraints in Database
Normalization
DML Commands
Operators
Nested Queries
Set Operations
Special Operators
Aggregate Functions
Limit, Offset & Fetch
Joins
Views
Procedures
Triggers
DCL Commands
TCL Commands
Export/ Import Data
UUID Datatype
Follow us to never miss an update in the future.
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This PPT File, helps with the Basic Interview Questions specially for DataBase Domain.. For more questions , please log in to www.rekruitin.com
By ReKruiTIn.com
Structured Query Language
SQL Commands:
• The standard SQL commands to interact with relational databases are CREATE, SELECT, INSERT, UPDATE, DELETE and DROP
PostgreSQL Tutorial For Beginners | EdurekaEdureka!
YouTube Link: https://youtu.be/-VO7YjQeG6Y
** MYSQL DBA Certification Training https://www.edureka.co/mysql-dba **
This Edureka PPT on PostgreSQL Tutorial For Beginners (blog: http://bit.ly/33GN7jQ) will help you learn PostgreSQL in depth. You will also learn how to install PostgreSQL on windows. The following topics will be covered in this session:
What is DBMS
What is SQL?
What is PostgreSQL?
Features of PostgreSQL
Install PostgreSQL
SQL Command Categories
DDL Commands
ER Diagram
Entity & Attributes
Keys in Database
Constraints in Database
Normalization
DML Commands
Operators
Nested Queries
Set Operations
Special Operators
Aggregate Functions
Limit, Offset & Fetch
Joins
Views
Procedures
Triggers
DCL Commands
TCL Commands
Export/ Import Data
UUID Datatype
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
This PPT File, helps with the Basic Interview Questions specially for DataBase Domain.. For more questions , please log in to www.rekruitin.com
By ReKruiTIn.com
Here i am giving some sql queries which is helpful for practicing in sql server for learning more sql interview questions you can refer this link http://skillgun.com/sql/interview-questions-and-answers
Ten query tuning techniques every SQL Server programmer should knowKevin Kline
From the noted database expert and author of 'SQL in a Nutshell' - SELECT statements have a reputation for being very easy to write, but hard to write very well. This session will take you through ten of the most problematic patterns and anti-patterns when writing queries and how to deal with them all. Loaded with live demonstrations and useful techniques, this session will teach you how to take your SQL Server queries mundane to masterful.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Accelerate your Kubernetes clusters with Varnish CachingThijs Feryn
A presentation about the usage and availability of Varnish on Kubernetes. This talk explores the capabilities of Varnish caching and shows how to use the Varnish Helm chart to deploy it to Kubernetes.
This presentation was delivered at K8SUG Singapore. See https://feryn.eu/presentations/accelerate-your-kubernetes-clusters-with-varnish-caching-k8sug-singapore-28-2024 for more details.
Neuro-symbolic is not enough, we need neuro-*semantic*Frank van Harmelen
Neuro-symbolic (NeSy) AI is on the rise. However, simply machine learning on just any symbolic structure is not sufficient to really harvest the gains of NeSy. These will only be gained when the symbolic structures have an actual semantics. I give an operational definition of semantics as “predictable inference”.
All of this illustrated with link prediction over knowledge graphs, but the argument is general.
State of ICS and IoT Cyber Threat Landscape Report 2024 previewPrayukth K V
The IoT and OT threat landscape report has been prepared by the Threat Research Team at Sectrio using data from Sectrio, cyber threat intelligence farming facilities spread across over 85 cities around the world. In addition, Sectrio also runs AI-based advanced threat and payload engagement facilities that serve as sinks to attract and engage sophisticated threat actors, and newer malware including new variants and latent threats that are at an earlier stage of development.
The latest edition of the OT/ICS and IoT security Threat Landscape Report 2024 also covers:
State of global ICS asset and network exposure
Sectoral targets and attacks as well as the cost of ransom
Global APT activity, AI usage, actor and tactic profiles, and implications
Rise in volumes of AI-powered cyberattacks
Major cyber events in 2024
Malware and malicious payload trends
Cyberattack types and targets
Vulnerability exploit attempts on CVEs
Attacks on counties – USA
Expansion of bot farms – how, where, and why
In-depth analysis of the cyber threat landscape across North America, South America, Europe, APAC, and the Middle East
Why are attacks on smart factories rising?
Cyber risk predictions
Axis of attacks – Europe
Systemic attacks in the Middle East
Download the full report from here:
https://sectrio.com/resources/ot-threat-landscape-reports/sectrio-releases-ot-ics-and-iot-security-threat-landscape-report-2024/
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
"Impact of front-end architecture on development cost", Viktor TurskyiFwdays
I have heard many times that architecture is not important for the front-end. Also, many times I have seen how developers implement features on the front-end just following the standard rules for a framework and think that this is enough to successfully launch the project, and then the project fails. How to prevent this and what approach to choose? I have launched dozens of complex projects and during the talk we will analyze which approaches have worked for me and which have not.
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualityInflectra
In this insightful webinar, Inflectra explores how artificial intelligence (AI) is transforming software development and testing. Discover how AI-powered tools are revolutionizing every stage of the software development lifecycle (SDLC), from design and prototyping to testing, deployment, and monitoring.
Learn about:
• The Future of Testing: How AI is shifting testing towards verification, analysis, and higher-level skills, while reducing repetitive tasks.
• Test Automation: How AI-powered test case generation, optimization, and self-healing tests are making testing more efficient and effective.
• Visual Testing: Explore the emerging capabilities of AI in visual testing and how it's set to revolutionize UI verification.
• Inflectra's AI Solutions: See demonstrations of Inflectra's cutting-edge AI tools like the ChatGPT plugin and Azure Open AI platform, designed to streamline your testing process.
Whether you're a developer, tester, or QA professional, this webinar will give you valuable insights into how AI is shaping the future of software delivery.
Key Trends Shaping the Future of Infrastructure.pdfCheryl Hung
Keynote at DIGIT West Expo, Glasgow on 29 May 2024.
Cheryl Hung, ochery.com
Sr Director, Infrastructure Ecosystem, Arm.
The key trends across hardware, cloud and open-source; exploring how these areas are likely to mature and develop over the short and long-term, and then considering how organisations can position themselves to adapt and thrive.
Mission to Decommission: Importance of Decommissioning Products to Increase E...
SQL Commands
1. Practical 1
Introduction to SQL
SQL Structured Query Language is a special-purpose programming language designed for
managing data held in a relational database management system (RDBMS).
Originally based upon relational algebra and tuple relational calculus, SQL consists of a data
definition language and a data manipulation language. The scope of SQL includes data insert,
query, update and delete, schema creation and modification, and data access control. Although
SQL is often described as, and to a great extent is, a declarative language (4GL), it also
includes procedural elements.
SQL was one of the first commercial languages for Edgar F. Codd's relational model, as
described in his influential 1970 paper, "A Relational Model of Data for Large Shared Data
Banks." Despite not entirely adhering to the relational model as described by Codd, it became the
most widely used database language.
SQL became a standard of the American National Standards Institute (ANSI) in 1986, and of
the International Organization for Standardization (ISO) in 1987.[12]
Since then, the standard has
been enhanced several times with added features. Despite these standards, code is not completely
portable among different database systems, which can lead to vendor lock-in. The different
makers do not perfectly adhere to the standard, for instance by adding extensions, and the
standard itself is sometimes ambiguous.
History
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce in the
early 1970s. This version, initially called SEQUEL (Structured English Query Language), was
designed to manipulate and retrieve data stored in IBM's original quasi-relational database
management system, System R, which a group at IBM San Jose Research Laboratory had
developed during the 1970s. The acronym SEQUEL was later changed to SQL because
"SEQUEL" was a trademark of the UK-based Hawker Siddeley aircraft company.
In the late 1970s, Relational Software, Inc. (now Oracle Corporation) saw the potential of the
concepts described by Codd, Chamberlin, and Boyce and developed their own SQL-
based RDBMS with aspirations of selling it to the U.S. Navy, Central Intelligence Agency, and
other U.S. government agencies. In June 1979, Relational Software, Inc. introduced the first
commercially available implementation of SQL, Oracle V2 (Version2) for VAX computers.
After testing SQL at customer test sites to determine the usefulness and practicality of the system, IBM
began developing commercial products based on their System R prototype including System/38, SQL/DS,
and DB2, which were commercially available in 1979, 1981, and 1983, respectively.
2. Practical 2
Basic SQL commands (create, drop, insert)
Create :- SQL Create is the command used to create data objects, including everything from
new databases and tables to views and stored procedures.
DROP :- SQL DROP is another command that removes data from the data store. The drop
command must be performed on SQL objects including databases, tables, table columns, and
SQL views. Dropping any of these objects removes them completely from your SQL application
and all data contained in any of the data objects dropped are lost forever.
3. Insert :- SQL tables store data in rows, one row after another. The Insert command is the
command used to insert new data into a table by specifying a list of values to be inserted into
each table column.
Inserting Single value
Inserting Multi values
4. Practical 3
Viewing commands (select, update)
Select :- SQL Select may be the most commonly used command by SQL programmers. It is used
to extract data from databases and tp present data in a user-friendly table called the result set.
5. Update :- SQL Update is the command used to update existing table rows with new data values.
Update is a very powerful command in the SQL world. It has the ability to update every single
row in a database with the execution of only a single query.
6. Practical 4
Modify structure of table (alter)
Alter :- SQL Alter is the command used to add, edit, and modify objects like tables, databases,
and views. Alter is the command responsible for making table column adjustments or renaming
table columns. New table columns can also be added and dropped from existing SQL tables.
7. Practical 5
Compound condition commands (and, or, in, not in, between, like, not like)
AND :- SQL AND links together two or more conditional statements for increased filtering when
running SQL commands. AND helps the developer query for very specific records while
answering questions like, “ I want to view all orders made by a certain customer AND made on a
special date”. There is no limit to the number if AND conditions that can be applied to a query
utilizing the WHERE clause. This makes it possible for the developer to be as precise as needed
when querying for results.
OR :- SQL OR also applies logic to help filter results. The difference is that instead of linking
together conditional statements, an OR condition just asks SQL to look for 2 separate conditions
within the same query and return any records/rows matching either of the conditions.
8. In :- SQL In is an operator used to pull data matching a list of values. A scenario where this
proves useful would be if we wanted to retrieve customer data for two or more customers.
Not In :- SQL Not In, allows the developer to eliminate a list of specific values from the result
set.
9. BETWEEN :- BETWEEN is a conditional statement found in the WHERE clause. It is used to
query for table rows that meets a condition falling between a specified range of numeric values.
BETWEEN essentially combines two conditional statements into one and simplifies the
querying process for you. To understand exactly what we mean, we could create another query
without using the BETWEEN condition and still come up with same results.
13. Practical 7
Grouping commands (group by, order by)
GROUPBY :- SQL GROUP BY aggregates column values into a single record value. GROUP
BY requires a list of table columns on which to run the calculations. Here, SQL has consolidated
like values and returned those that are unique. In this case, we have actually duplicated the
behavior of SELECT DISTINCT, but you have also seen firsthand how GROUP BY accepts a
table column as a list and consolidates lie customer values. To unleash the true power of
GROUP BY, it is necessary to include at least one mathematical function, and to do so we will
utilize the SUM function to calculate how many total items have been purchased by each of our
customers.
14. Order By :- Order By is the SQL command used to sort rows as they are returned from a select
query. SQL order by command may be added to the end of any select query and it requires at
least one table column to be specified in order for SQL to sort the results.
20. Practical 11
Set Operations
Union : SQL UNION combines two separate SQL queries into one result set. A JOIN
statement adds additional table columns to a result set, UNION combines row results from one
table with rows of another table.
Minus :