data definition language data manipulation language ppt

Ngày tải lên: 08/03/2014, 04:22

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Ngày tải lên: 31/03/2014, 20:20

Ngày tải lên: 17/03/2014, 00:20

Ngày tải lên: 23/03/2014, 17:20

... and Data Types 110 Java−to−JDBC Data Type Mappings 111 JDBC−to−Java Data Type Mappings 114 Standard SQL data types 114 Advanced SQL data types 118 ii Table of Contents Chapter 17: Building Data centric ... access language for relational databases. The language enables you to build database structures, model business processes, and to add, delete, modify, and retrieve data. The core SQL language ... Relational Database Primer 12 In This Chapter 12 The RDBMS in a Nutshell 12 Understanding data storage 14 Ensuring data integrity 15 Reviewing SQL Basics 19 Using Data Manipulation Language (DML)...

Ngày tải lên: 10/12/2013, 02:15

... of your data center. The Three Principles of Data Center Infrastructure Design Page 7 Deployment The graphic below depicts a sample data center using ADC's comprehensive line of data center-grade ... existing data center space is likely the most expensive and disruptive problem your organization can face. Expanding the physical space of a data center can cost more than the original data center ... transmission within the data center. A substandard performing data canter can be just as costly and disruptive to your business as downtime. The Three Principles of Data Center Infrastructure...

Ngày tải lên: 10/12/2013, 03:15

Ngày tải lên: 10/12/2013, 03:15

... 255.255.255.0 CHAPTER 1-1 Data Center Blade Server Integration Guide OL-12771-01 1 Blade Servers in the Data Center—Overview Data Center Multi-tier Model Overview The data center multi-tier model ... neighboring switches. vii Data Center Blade Server Integration Guide OL-12771-01 Preface Document Purpose The data center is the repository for applications and data critical to the modern ... into the Data Center with Intelligent Network Services.” Discusses the integration of intelligent services into the Cisco Data Center Architecture that uses blade server systems. 2-8 Data Center...

Ngày tải lên: 10/12/2013, 16:15

... thiệu cách tạo nhóm bảo vệ và cách khôi phục dữ liệu trong môi trường Microsoft được bảo vệ bởi Data Protection Manager. Lưu ý : Bài này được tác giả viết sử dụng DPM 2007 Beta 2. Trong phát ... thêm một đĩa vào kho lưu trữ, bạn thực hiện các bước như sau: 1. Mở Microsoft System Center Data Protection Manager. 2. Trong cửa sổ điều khiển bạn kích vào vùng Management. 3. Trong ... khôi phục. Chúng ta có thể nhóm các cảnh báo này bằng tính năng Group by (hình 07). Triển khai Data Protection Manager 2007 (Phần 2) Ngu ồn : quantrimang.com  Anderson Patricio Trong phần trước,...

Ngày tải lên: 12/12/2013, 04:15

... h iu hành 32bit hoặc x64 Cài đặt Data Protection Manager 2007 Triển khai Data Protection Manager 2007 (Phần 1) Ngu ồn : quantrimang.com  Anderson Patricio Data Protection Manager (DPM) của ... các thành phần cài đặt Kết luận Trong bài này chúng tôi đã giới thiệu một cách tổng quan về Data Protection Manager 2007 và cách triển khai một giải pháp. Trong bài tiếp theo chúng tôi sẽ ... Để cài đặt DPM 2007 Beta2, bạn thực hiện theo các bước sau: 1. Initial screen. Kích Install Data Protection Manager, như được thể hiện trong hình 2. Lúc này m ột số thành phần sẽ được tự...

Ngày tải lên: 12/12/2013, 04:15

... DATE The day_name must be a day of the week in your session's date language (specified by the NLS_DATE _LANGUAGE database initialization parameter). The time component of the returned date ... involving one or more values, it must first convert the data to be the right datatype for the operation. As Chapter 4, Variables and Program Data, describes, there are two kinds of conversion: ... PL/SQL attempts to convert the data implicitly to the datatypes needed to perform the operation. I recommend that you avoid allowing either the SQL or PL/SQL languages to perform implicit conversions...

Ngày tải lên: 15/12/2013, 04:15

... follows: 'NLS_DATE _LANGUAGE= < ;language& gt;' where < ;language& gt; is a language recognized by your instance of the database. You can usually determine the acceptable languages by checking ... AM, and PM), the language used to spell these words is determined by the National Language Support parameters, NLS_DATE _LANGUAGE and NLS _LANGUAGE, or by the optional date language argument ... string, and nls _language is a string which specifies the language which is to be used to interpret the names and abbreviations of both months and days in the string. The format of nls _language is...

Ngày tải lên: 15/12/2013, 04:15

... Data Some of the most interesting and useful features of packages have to do with package data. Package data is any data structure declared in a package body or specification. With package data ... connection to the database (same user name and password) to run the report. So even if this report accesses the same package and its data structures, the values in those data structures will ... the data defined inside the package. Because the scope of the package data is the entire session, their values are maintained in the SGA. You are not, in other words, simply sharing the data...

Ngày tải lên: 15/12/2013, 04:15

... External Procedures 20.8 Postscript: Using the BFILE Datatype A better abstraction for the Planetary Pages datatype Image_t would include a BFILE datatype rather than a VARCHAR2 file_name attribute. ... collection column and your dataset will be "small," use a VARRAY. What is "small?" I tend to think in terms of how much data you can fit into a single database block; if you ... of the dataset; your data has an intrinsic upper bound; or you expect, in general, to retrieve the entire collection simultaneously. ● If you need sparse PL/SQL tables, say, for " ;data- smart"...

Ngày tải lên: 15/12/2013, 04:15

... "return_value" with a datatype that matches the RETURN clause of the function. If I am returning a VARCHAR2, declare a VARCHAR2 local variable. If I am returning data with the same datatype as a table ... FUNCTION fname () RETURN datatype IS return_value datatype; BEGIN RETURN return_value; END fname; Then I just have to search-and-replace on "fname" and "datatype" and I am ... need to the INSERT statement inside add_company. 22.5.4 Avoid Global Variables and Data Structures Global data sure is convenient. You can refer to it anywhere inside your application. You can...

Ngày tải lên: 15/12/2013, 04:15

... about this and other holidays. Language point 41 – present for future James asks Henry: What are you doing over the Bank Holiday? He uses the PRESENT CONTINUOUS (Language point 21) to talk about something ... means ‘first of all’ B OB :[hands him the mobile] Go for it! It’s important to keep your mum happy! Language point 42 – empty ‘it’ When we are talking about the time and date we use it as an empty subject ... `ənə ln rik/. And sometimes you even see going to spelt gonna. We’ll meet another future in Language point 43. For now, remember: ã future plans or arrangements PRESENT CONTINUOUS ã future...

Ngày tải lên: 15/12/2013, 05:15

... you? D AVE : Thursday’s fine. I’ll put you down for twelve o’clock. Language point 44 – more about phrasal verbs As we saw in Language point 20 in Unit 3, PHRASAL VERBS are an important and common ... right, it smells off. Take it back, I expect they’ll give you your money back. K ELLY : I hope so! Language point 45 – state verbs Most verbs in English are ACTION VERBS – they describe an action that ... (don’t expect/’m not expecting) any post today. 10 (Do you see/Are you seeing) what I’m saying? Language point 46 – ‘bring’ and ‘take’ Bring and take are DIRECTION VERBS , like come and go: come...

Ngày tải lên: 15/12/2013, 05:15

... Maria’s parties are usually pretty useless, aren’t they? J USTINE : True. Language point 49 – more about state verbs In Language point 45 in the last unit we saw that state verbs in English describe ... belongs to me not ‘This book’s belonging to me’ See and feel are on the list of state verbs in Language point 45, but in Dialogue 4 of this unit Sarah uses both of them in the present continuous: She’s ... soon. __________________________ . 20 We’d better put off (see) them till next week. __________________________ . Language point 51 – ‘else’ Else means ‘other’; but it’s only used with: 1 PRONOUNS ending in -one,...

Ngày tải lên: 15/12/2013, 05:15

... Language point 54 – past simple In Dialogue 1 Shamira and Liz were using the PRESENT PERFECT because ... look in more detail at the difference in use between the past simple and the present perfect in Language point 55. For now, let’s look at how they differ in form: ã with a REGULAR verb: Present ... police station and report it lost. S HAMIRA : Yes. Maybe someone’s found it somewhere and handed it in. Language point 53 – present perfect This is a very important form of the verb in English – it is...

Ngày tải lên: 15/12/2013, 05:15