database systems

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i.a. karimov-the first president of the republic of uzbekistan lesson 15. databases watch a video: what is a database. make notes and discuss the charts 1.____________________________________ 2.____________________________________ 3.____________________________________ 4.____________________________________ 5.____________________________________ 6.____________________________________ glossary new word definition database management system dbms is the software that manages all aspects of working with a database, from storing and securing the data to enforcing data integrity rules, to providing forms for data entry and manipulation. a relational database management system implements the relational model of tables and relationships between them. primary keys: this key uniquely identifies a record in a table. it cannot be null. nosql nosql is a database model developed to respond to the need for storing unstructured data such as emails, social media posts, video, or images. rather than using sql and the strict acid model to ensure data integrity, nosql follows the less-strict base model. a nosql database schema does not …

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nging the verbs in the brackets to the past form. i _______________ my mistake. (admit) we _____________ a lot about it. (learn) the wind ______________ last night. (blow) we _______________ in prague. (meet) when she heard it she _____________ . (cry) i _______________ the book on the desk. (put) sue ____________ a cat with a pencil. we ______________ the postcard yesterday. finally, we _____________ the address. (find) i _______________ down on a chair and relaxed. (sit) he ________________ the ball and ran away. (hit) i _____________ you the time. (tell) i _____________ you were right. (know) he ____________ what i wanted. (understand) the teacher _______________ her temper. (lose) appendix 4. reading. . task 1. read, discuss and do exercises. complete this manual with the words in the box. a database has several parts. these are called (1)____________ . the simplest of these is a table; most databases have at least …

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if we want to combine information from several tables or to do something with the data such as add up financial information from several records, we can (9)_________ . fields, form, objects, primary key, query the database, record, report, retrieve a record, unique task 2. work in small groups. for each of the se tables, discuss which field is a good primary key(more than one answer might be possible). be prepared to give reasons for your answers. a database table holding details of a club’s members. the field headings are: given name, family name, email address, membership number, address and mobile number. a database table with details of products that a company holds in stock. the field headings are: product name, product price, number of units and barcode. a database table of patients in a hospital. the field headings are: family name, given name, date of entry ro the hospital, …

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a database? a database is... z an organized set of stored information usually on one topic = acollectionof records % away to organize information ina file so that you can examine information on a variety of ways and access the information in new ways z a type of "filing cabinet" that can help you manage, manipulate, organize, sort and modify information components of database system + users- people who interact with the database: - application programmers. - end users. - data administrators. + software- lies between the stored data and the users: — - dbms. - application software. - user interface. regular and irregular verbs regular verbs ifa verb is regular, v2 and v3 end in -ed infinitive v1 past simple-v2 past participle -v3 irregular verbs when v2 and v3 do not end in —ed, the verb is irregular infinitive past past v1 simple-v2__ participle-v3 accept accepted accepted be was/ …

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О "database systems"

i.a. karimov-the first president of the republic of uzbekistan lesson 15. databases watch a video: what is a database. make notes and discuss the charts 1.____________________________________ 2.____________________________________ 3.____________________________________ 4.____________________________________ 5.____________________________________ 6.____________________________________ glossary new word definition database management system dbms is the software that manages all aspects of working with a database, from storing and securing the data to enforcing data integrity rules, to providing forms for data entry and manipulation. a relational database management system implements the relational model of tables and relationships between them. primary keys: this key uniquely identifies a re...

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