Marks - 40 DBMS (OBMS & ORACLE 91) 1. Write a note on File based system/ Data base system Solution: File-Based Systems: Conventionally‚ Before the database Systems evolved ‚ data in the software’s Systems was stored in and represented using flats files. Drawbacks of File-Based Systems: File - Based Systems [pic] As shown in the figure‚ in a file-based system‚ different programs in the same application may be interacting with different private data files. There
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1/28/2015 sql lab @ home 2 | SQL LAB @ HOME SQL LAB @ HOME search Classic Flipcard Magazine Mosaic Sidebar Snapshot Timeslide sql lab @ home 12 sql lab @ home11 sql lab @ home 10 sql lab @ home 2 1. Display the details of all the customers. (Use the AdventureWorks database) select * from [Sales].[Customer] sql lab @ home 9 sql lab @ home 8 2. Display the ID‚ type‚ number‚ and expiry year of all the credit cards in the following format. (Use the AdventureWorks database) sql lab @ home 7
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database server. 1) Query Engine SQL Interface The SQL interface provides the mechanisms to receive commands and transmit results to the user. The MySQL SQL interface was built to the ANSI SQL standard and accepts the same basic SQL statements as most ANSI-compliant database servers. Although many of the SQL commands supported in MySQL have options that are not ANSI standard‚ the MySQL developers have stayed very close to the ANSI SQL standard. Connections to the database server
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many degrees". Here‚ employee ID alredy exists and is a field/attribute in itself. Hobbies requires a new field/attribute and comes under the entity of student details. The relationship is 1:M and the model is based on how you build the table. We can create a new table with fields for employee ID and every possible degrees. Here‚ the primary key of the employeeID becomes foriegn key in the new relation table. But‚ this model leads many null values which can be still operated. If we use only a field
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Database Architecture DBM/380 –Database Concepts September 9‚ 2013 Sandra Graca Database Architecture Database systems are a way to collect and store large amounts of data. Essentially‚ database are electronic filing systems that store raw data to be later retrieved as useable information (Skillport‚ ). Using such a tool simplifies the filing and storage of all sorts of information used by businesses today. A common type of database is a customer/inventory database. Different tables
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Adapting to a New Environment Human being are very adaptable. We can live in most climates of the world. In the past‚ people tended to stay in a place they were born‚ but now we move more easily from countryside to city‚ from one part of a country to another‚ and even from country to country. Each place has its own customs and ways of life‚ and countries also have different languages. When I moved from Klaten to Padang‚ I changed my behavior in three significant ways. First‚ I completely changed
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you change? To change the query above and have it only show students with a grade of A or B I would add criteria to the grade field where e.grade = ‘A’ OR E.Grade = ‘B’; Given the table information above‚ create the following queries using SQL: Query 1: Find the names‚ ID’s‚ and number of credits of all students who are math majors. The result should be a three column table. SELECT Name‚ StudentID‚ Credits FROM Students WHERE Major = ‘Math’; Query 2: Find the ClassID of all classes
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SQL Facts SQL stands for Structured Query Language SQL is pronounced “sequel” SQL is declarative language SQL is used to access & manipulate data in databases Top SQL DBs are MS SQL Server‚ Oracle‚ DB2‚ and MySQL Database Definitions RDBMS (Relational Database Management System) – Software that stores and manipulates data arranged in relational database tables. Table – A set of data arranged in columns and rows. The columns represent characteristics of stored data and the rows
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Ex. No.1 AIM: Study data types in SQL and usage of various Data Definition Language commands. PROCEDURE: What is SQL? SQL is structured Query Language which is a computer language for storing‚ manipulating and retrieving data stored in relational database. SQL is the standard language for Relation Database System. All relational database management systems like MySQL‚ MS Access‚ Oracle‚ Sybase‚ Informix‚ postgres and SQL Server uses SQL as standard database language. Also they are using different
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Rich environments indoors have an immediate effect on the quality of children’s learning and development. A rich environment is comfortable‚ interesting‚ attractive and appropriate for the child or children who use it. For some children it becomes like a second home where they eat. A suitable environment for a young baby will be very different from a suitable environment for a four or five year old although some things will be the same. Environments should be attractive and make children feel safe
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