Interface connection
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The Connection interface represents a session with a specific database. It allows SQL statements to be executed and results returned within the context of the connection. A Connection object can provide metadata about the database tables, SQL grammar, stored procedures, and capabilities. It has a createStatement() method that returns a Statement object used to send and execute queries in the backend database. Statement objects are typically used for executing SQL statements without parameters.
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Fundamentals
The document discusses the fundamentals of computer systems, including definitions, components, and how they work together. It defines a computer as an electronic device that accepts input, processes it, and provides output. The key components are the input and output units, memory unit, CPU (consisting of the ALU and control unit), and secondary storage. The input and output units send and receive data, the memory unit temporarily stores programs and data, the CPU performs arithmetic/logical operations and coordinates tasks, and secondary storage provides long-term storage. Together these components work to accept user input, process the data, and provide the results.
Data type
The document discusses fundamental data types in C including integer, floating point, character, and void types. It describes how variables must be declared before use and explains basic type modifiers like short, long, and unsigned. The summary also covers integer storage sizes and ranges, floating point precision and representation, and type conversions in C using casts and arithmetic promotion.
Hibernate example1
This document provides an introduction and overview of Hibernate, an object-relational mapping tool for Java. It discusses what ORM is, why it is used, and defines key Hibernate concepts like entities, mapping files, configuration files, and the session factory. It also provides an example of creating a basic Hibernate project with an Employee entity class, mapping file, configuration file, and test case to load an employee object by ID from the database.
Jdbc workflow
The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.
2 jdbc drivers
A JDBC type 2 driver converts JDBC API calls to database driver native API calls. It has a two-tier architecture and is faster than other drivers but is database dependent. A type 4 driver converts JDBC calls to database native network calls. It is platform independent, lightweight, and portable but requires implementing network protocols. A type 3 driver converts JDBC calls to database independent network calls and supports three-tier architectures and distributed transactions.
3 jdbc api
The document discusses the JDBC API and the basic steps for working with it to access a tabular datastore from a Java application. It covers:
1. The JDBC API provides an abstraction layer for Java programs to access database services via JDBC drivers.
2. The basic steps involve obtaining a database connection, executing SQL statements, and processing the results.
3. Obtaining a connection involves instantiating a Driver object, constructing a JDBC URL to identify the database, and passing this along with authentication properties to the Driver's connect method.
4 jdbc step1
The document discusses obtaining a connection to a database in Java using JDBC. It provides code examples of creating a database connection using the DriverManager class and Oracle's JDBC Thin driver. The code inserts a record into an EMP table for demonstration purposes. Best practices for database connectivity in a Java project are then covered, such as using the DAO pattern to separate data access logic from business logic. This improves testability, reusability and flexibility in switching database types.
Dao example
The document discusses improving the Data Access Object (DAO) design pattern implementation in a project using JDBC for database connectivity. It describes how the current DAO implementation creates a new Driver object on every request, which is inefficient. It recommends using the DriverManager class instead to manage a single Driver instance and create connections. The DriverManager acts as a factory class to centralize the connection creation code and avoid multiple Driver instances, improving performance.
Internal
This document discusses three ways to set internal styles in HTML:
1) Universal styles that apply to all instances of a tag throughout the page. For example, making all <font> tags bold.
2) Styles using identifiers that allow restricting styles to specific elements. An ID is added and referenced in the style sheet.
3) User-defined styles that can customize styles.
The examples demonstrate applying a green color to all <a> links universally and then using IDs to style two <a> links differently. Internal styles only affect the current page.
3. elements
The document discusses HTML elements and their structure. It explains that HTML elements contain a start tag, element content, and end tag. Elements can be nested within other elements. Common elements like <p>, <body>, and <html> are used to demonstrate how elements are structured and nested to form an HTML document. The document also covers empty elements, case sensitivity of tags, and the importance of including closing tags.
Headings
This document provides information on HTML headings, horizontal lines, and comments. It explains that headings are defined using tags from <h1> to <h6>, with <h1> being the most important and <h6> the least important. Horizontal lines are created using the <hr> tag to separate content. HTML comments are written using <!-- and --> and are ignored by browsers.
Forms
HTML forms allow users to enter and submit data to a server. The <form> element is used to create an HTML form, which can contain various input elements like text fields, checkboxes, radio buttons, and submit buttons. Common input element types include text, password, radio buttons, checkboxes, and submit buttons. Radio buttons allow a single selection from options, while checkboxes allow zero or more selections. The submit button submits the form data to the action page specified in the form tag.
Css
1. The document provides an overview of CSS (Cascading Style Sheets) and how it can be used to style web pages by applying styles to HTML elements.
2. Styles can be applied inline, via embedded style blocks, or through external style sheets. External style sheets allow controlling styles across entire websites.
3. CSS properties like font, color, size, and other attributes can be set for elements using selectors like element names, classes, IDs to format text. Additional properties control layout aspects like margins, padding, borders.
Views
VIEWs allow users to select subsets of data from one or more tables. A VIEW acts like a virtual table but contains no data itself - it just represents the result set of a SELECT statement. VIEWs provide a layer of security by restricting access to specific rows, columns, or tables. The CREATE VIEW statement is used to define a new VIEW, ALTER VIEW modifies an existing VIEW definition, and DROP VIEW removes a VIEW.
Views
VIEWs allow users to select subsets of data from one or more tables. A VIEW acts like a virtual table but contains no data itself - it just represents the result set of a SELECT statement. VIEWs provide a layer of security by restricting access to specific rows, columns, or tables. The CREATE VIEW statement is used to define a new VIEW, ALTER VIEW modifies an existing VIEW definition, and DROP VIEW removes a VIEW.
Views
VIEWs allow users to select subsets of data from one or more tables. A VIEW acts like a virtual table but contains no data itself - it just represents the result set of a SELECT statement. VIEWs provide a layer of security by restricting access to specific rows, columns, or tables. The CREATE VIEW statement is used to define a new VIEW, ALTER VIEW modifies an existing VIEW definition, and DROP VIEW removes a VIEW.
Starting jdbc
JDBC allows Java applications to connect to MySQL databases. The document provides instructions to install MySQL, download the MySQL JDBC driver from online, and select the platform-independent ZIP file version of the driver.
Properties
The Properties class represents a persistent set of properties where each key and value is a string. It extends the Hashtable class to allow loading and saving properties to streams in various formats like text and XML. While it inherits put and putAll from Hashtable, setProperty should be used instead since put allows non-string keys and values which may cause errors when saving. It can also contain a default properties list that is searched if a key is not found in the primary list.
Java.sql package
The Java .sql package contains interfaces and classes for connecting to and interacting with databases. It includes interfaces like Connection, PreparedStatement, and ResultSet as well as classes like Date, DriverManager, and Types. JDBC drivers provided by companies implement the Driver interface to enable communication with different databases via the standard JDBC API.
Interface callable statement
CallableStatement allows Java applications to call stored procedures in a database. Stored procedures are programs stored in a database that can be run from an application to improve performance. Database developers create stored procedures that are executed on the database server to encapsulate common operations.
More from myrajendra (20)
Recently uploaded
Programming Foundation Models with DSPy - Meetup Slides
Prompting language models is hard, while programming language models is easy. In this talk, I will discuss the state-of-the-art framework DSPy for programming foundation models with its powerful optimizers and runtime constraint system.
5th LF Energy Power Grid Model Meet-up Slides
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
Northern Engraving | Nameplate Manufacturing Process - 2024
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks creates AI-boosted business software that helps employees work more efficiently and effectively. Managing data across multiple RDBMS and NoSQL databases was already a challenge at their current scale. To prepare for 10X growth, they knew it was time to rethink their database strategy. Learn how they architected a solution that would simplify scaling while keeping costs under control.
Choosing The Best AWS Service For Your Website + API.pptx
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
The Microsoft 365 Migration Tutorial For Beginner.pptx
This presentation will help you understand the power of Microsoft 365. However, we have mentioned every productivity app included in Office 365. Additionally, we have suggested the migration situation related to Office 365 and how we can help you.
You can also read: https://www.systoolsgroup.com/updates/office-365-tenant-to-tenant-migration-step-by-step-complete-guide/
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...Edge AI and Vision Alliance
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/how-axelera-ai-uses-digital-compute-in-memory-to-deliver-fast-and-energy-efficient-computer-vision-a-presentation-from-axelera-ai/
Bram Verhoef, Head of Machine Learning at Axelera AI, presents the “How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-efficient Computer Vision” tutorial at the May 2024 Embedded Vision Summit.
As artificial intelligence inference transitions from cloud environments to edge locations, computer vision applications achieve heightened responsiveness, reliability and privacy. This migration, however, introduces the challenge of operating within the stringent confines of resource constraints typical at the edge, including small form factors, low energy budgets and diminished memory and computational capacities. Axelera AI addresses these challenges through an innovative approach of performing digital computations within memory itself. This technique facilitates the realization of high-performance, energy-efficient and cost-effective computer vision capabilities at the thin and thick edge, extending the frontier of what is achievable with current technologies.
In this presentation, Verhoef unveils his company’s pioneering chip technology and demonstrates its capacity to deliver exceptional frames-per-second performance across a range of standard computer vision networks typical of applications in security, surveillance and the industrial sector. This shows that advanced computer vision can be accessible and efficient, even at the very edge of our technological ecosystem.Apps Break Data
How information systems are built or acquired puts information, which is what they should be about, in a secondary place. Our language adapted accordingly, and we no longer talk about information systems but applications. Applications evolved in a way to break data into diverse fragments, tightly coupled with applications and expensive to integrate. The result is technical debt, which is re-paid by taking even bigger "loans", resulting in an ever-increasing technical debt. Software engineering and procurement practices work in sync with market forces to maintain this trend. This talk demonstrates how natural this situation is. The question is: can something be done to reverse the trend?
Skybuffer SAM4U tool for SAP license adoption
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
What is an RPA CoE? Session 1 – CoE Vision
In the first session, we will review the organization's vision and how this has an impact on the COE Structure.
Topics covered:
• The role of a steering committee
• How do the organization’s priorities determine CoE Structure?
Speaker:
Chris Bolin, Senior Intelligent Automation Architect Anika Systems
Mutation Testing for Task-Oriented Chatbots
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Taking AI to the Next Level in Manufacturing.pdf
Read Taking AI to the Next Level in Manufacturing to gain insights on AI adoption in the manufacturing industry, such as:
1. How quickly AI is being implemented in manufacturing.
2. Which barriers stand in the way of AI adoption.
3. How data quality and governance form the backbone of AI.
4. Organizational processes and structures that may inhibit effective AI adoption.
6. Ideas and approaches to help build your organization's AI strategy.
JavaLand 2024: Application Development Green Masterplan
My presentation slides I used at JavaLand 2024
GraphRAG for LifeSciences Hands-On with the Clinical Knowledge Graph
Tomaz Bratanic
Graph ML and GenAI Expert - Neo4j
Recently uploaded (20)
Programming Foundation Models with DSPy - Meetup Slides
Programming Foundation Models with DSPy - Meetup Slides
9 CEO's who hit $100m ARR Share Their Top Growth Tactics Nathan Latka, Founde...
9 CEO's who hit $100m ARR Share Their Top Growth Tactics Nathan Latka, Founde...
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Overcoming the PLG Trap: Lessons from Canva's Head of Sales & Head of EMEA Da...
Northern Engraving | Nameplate Manufacturing Process - 2024
Northern Engraving | Nameplate Manufacturing Process - 2024
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Freshworks Rethinks NoSQL for Rapid Scaling & Cost-Efficiency
Choosing The Best AWS Service For Your Website + API.pptx
Choosing The Best AWS Service For Your Website + API.pptx
The Microsoft 365 Migration Tutorial For Beginner.pptx
The Microsoft 365 Migration Tutorial For Beginner.pptx
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAU
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
“How Axelera AI Uses Digital Compute-in-memory to Deliver Fast and Energy-eff...
Deep Dive: AI-Powered Marketing to Get More Leads and Customers with HyperGro...
Deep Dive: AI-Powered Marketing to Get More Leads and Customers with HyperGro...
Nordic Marketo Engage User Group_June 13_ 2024.pptx
Nordic Marketo Engage User Group_June 13_ 2024.pptx
JavaLand 2024: Application Development Green Masterplan
JavaLand 2024: Application Development Green Masterplan
GraphRAG for LifeSciences Hands-On with the Clinical Knowledge Graph
GraphRAG for LifeSciences Hands-On with the Clinical Knowledge Graph
Interface connection
- 2. public interface Connectionextends Wrapper { }
- 3. • A connection (session) with a specific database. SQL statements are executed and results are returned within the context of a connection. • A Connection object's database is able to provide information describing its tables, its supported SQL grammar, its stored procedures, the capabilities of this connection, and so on. This information is obtained with the getMetaData method.
- 4. createStatement() Statement createStatement() throws SQLException { } • This is used to create a Sql object. An sql object is used to send and execute the query in backend database. • Creates a Statement object for sending SQL statements to the database. SQL statements without parameters are normally executed using Statement objects. • If the same SQL statement is executed many times, it may be more efficient to use a PreparedStatement object. • Result sets created using the returned Statement object will by default be type TYPE_FORWARD_ONLY and have a concurrency level of CONCUR_READ_ONLY. The holdability of the created result sets can be determined by calling getHoldability(). • Returns:a new default Statement object