Lecture Database management systems Chapter 5 Relational database design by ER and EERtorelational mapping

... with a relational database SQL is more than simply a query language; it is a database sub-language and is becoming the standard interface to relational and non -relational database management systems ... packages, SQL/ DS and DB2, on this language SQL was adopted as an industry standard in 1986 (SQL- 86) Since then there has been three more standards, SQL- 89, SQL2...

Ngày tải lên: 31/03/2014, 20:20

... Equidepth 5. 0 2.67 2. 25 1.33 5. 0 5. 0 2 .5 1. 75 1.0 10 11 12 13 14 Bucket Bucket Bucket Bucket Count=8 Count=4 Count= 15 Count=3 Figure 14.4 10 11 12 13 14 Bucket Bucket Bucket Bucket Count= 15 Count=9 ... tree index on attribute R.a Use a linear hashed index on attribute R.a σa 50 ,000∧a

Ngày tải lên: 08/08/2014, 18:22

... Shutdown, and Troubleshooting of Compressor Systems Tables 5. 1 and 5. 2 illustrate typical startup and shutdown procedures Tables 5. 3 and 5. 4 illustrate troubleshooting charts for identifying and solving ... 47.04 psia 3.2 150 .52 8 psia Stage Three 150 .52 8 psia 3.2 481 .68 9 psia Stage Four 481 .68 9 psia 3.2 154 1.407 psia The basic components of a centrifugal compresso...

Ngày tải lên: 19/08/2013, 10:47

... Risk Management 147 Table 5- 2 Possible combinations of rolling two dice 1,1 1,2 1,3 1,4 1 ,5 1,6 2,1 2,2 2,3 2,4 2 ,5 2,6 3,1 3,2 3,3 3,4 3 ,5 3,6 4,1 4,2 4,3 4,4 4 ,5 4,6 5, 1 5, 2 5, 3 5, 4 5, 5 5, 6 ... anyway  154 Preparing for the Project Management Professional Certification Exam Figure 5- 2 Cutting the diamond 95% Shatters $10,000 – $5, 000 = $5, 000 5% Does not sha...

Ngày tải lên: 24/12/2013, 12:16

... inputs of livestock medicines to the environment and synthesizes the available information on the fate and transport of veterinary pharmaceuticals in manure and soils Toward the end of this chapter, ... 136 Fate of Pharmaceuticals in the Environment and in Water Treatment Systems 28 Ingerslev, F and Halling Sorensen, B Biodegradability of...

Ngày tải lên: 18/06/2014, 16:20

... When the beneficiary’s bank accepts a payment order, the bank becomes obligated to pay the beneficiary the amount of the order.21 Payment is due on the payment date of the order, the day when the ... payment by the means used Thus, if there is no contract of the beneficiary with respect to the means of payment of the obligation, acceptance by the...

Ngày tải lên: 02/07/2014, 16:21

... zero of a module close to and of argument 2π ν0 , then the ˘ power spectrum is almost zero in the proximity of ν0 152 Analysis and Control of Linear Systems Figure 5. 1 Typical power spectrum of ... y2 [5. 9] 144 Analysis and Control of Linear Systems On the other hand, the Fourier transform preserves the energy (Parseval theorem) Indeed, the energy of a c...

Ngày tải lên: 09/08/2014, 06:23

... CHAPTER Phytoremediation CONTENTS 5. 1 5. 2 Introduction Chemicals in the Soil–Plant System 5. 2.1 Metals 5. 2.2 Organics 5. 3 Types of Phytoremediation 5. 3.1 Phytoaccumulation 5. 3.2 Phytodegradation ... 5. 3.3 Phytostabilization 5. 3.4 Phytovolatilization 5. 3 .5 Rhizodegradation 5. 3.6 Rhizofiltration 5. 3.7 Phytoremediation for Groundwater Containment 5. 3.8 Phytoremediati...

Ngày tải lên: 11/08/2014, 04:20

... and D Products Inc., Aquarius Systems (P.O Box 2 15, North Prairie, WI 53 153 ; Tel: 41439 2-2 162 or 80 0-3 2 8-6 55 5; www.aquarius-systems.com) This is an amphibious backhoe It can move from dry land ... The net costs about $5 to $10 per lineal foot You can custom order a net from H Christiansen and Sons (4976 Arnold Road, Duluth, MN 55 803; Tel: 21 8-7 2 4 -5 50 9; e-ma...

Ngày tải lên: 11/08/2014, 10:22

... location, model, and color of the vehicle The GPS applications for the water, wastewater, and stormwater systems, though not as dramatic as TeleAid, are revolutionizing the way these systems are designed, ... points, and evaluate and select appropriate channel-rehabilitation measures This chapter is intended for professionals in the geographic “positioning” field It pr...

Ngày tải lên: 11/08/2014, 13:22

... produced in multiple-crop systems in many parts of the world, including 90% of beans in Colombia, 80% of beans in Brazil, and 60% of maize in all the Latin American tropics Whatever the crop combinations, ... negatively influenced in agricultural systems with high external inputs (fertilizers, pesticides, etc.) in tropical zones, while LEIA systems maintain medium to hig...

Ngày tải lên: 11/08/2014, 15:20

... governments and water supply providers on long-term water supply, conservation and drought contingency planning Review the local governments and water supply providers’ conservation and drought contingency ... 20 05 11: 25 AM MUNICIPAL AND INDUSTRIAL State Actions 124 TABLE Summary of Selected Pre -Drought Strategies Included in the Georgia Drought Management Plan E...

Ngày tải lên: 11/08/2014, 17:20

... Copyright 20 05 by CRC Press “L16 15_ C0 05 — 2004/11/19 — 18:48 — page 109 — # 15 Flocculation in Natural and Engineered Environmental Systems 110 stages described in Figure 5. 1 During the initial period ... undergoing changes in their shape and size In particular, disaggregation Copyright 20 05 by CRC Press “L16 15_ C0 05 — 2004/11/19 — 18:48 — page 1 05 — #11 F...

Ngày tải lên: 11/08/2014, 17:20

... 9.67 1.78 5. 43 × × × × × × × 104 52 1 05 AE 106 AE 1 05 AE 1 05 AE 1 05 44 106 44 = = = = Danckwerts Theory 56 34.9 17. 156 42 .55 6 53 .55 6 1.10 9.68 1.23 2.14 1.12 2.03 5, 43 × × × × × × × 104 52 104 AE ... use of Equation (5. 48) Then, Equation (5. 55) is obtained: − dCBb * = zaCO3 k2 CBb DO3 dt (5. 55) Integration of Equation (5. 55) between the limits: t = CBb = CBb t = t CBb...

Ngày tải lên: 11/08/2014, 17:22

... 20 05 9:20 AM 176 Restoration of Aquatic Systems TN-18 TN-29 TN-22 TN-31 TN-23 TN-33 TN- 25 TN-37 TN-26 TN-40 0.7 0.6 0 .5 mg/g 0.4 0.3 0.2 0.1 88 91 94 97 99 02 05 02 05 month/year (a) TP-18 TP-29 ... month/year (a) TP-18 TP-29 TP-22 TP-31 TP-23 TP-33 TP- 25 TP-37 TP-26 TP-40 0.6 0 .5 mg/g 0.4 0.3 0.2 0.1 88 91 94 97 99 month/year (b) Figure 5. 10 Sediment analyses of (A) t...

Ngày tải lên: 11/08/2014, 21:21