Zugl.: Hannover, Universiẗat, Diss., 1988.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Darbe analizuojama xBase komandų transformavimo į SQL užklausas problema. Pateikiamas konceptualus transformavimo problemos sprendimas, kurį sudaro dvi dalys: transformavimo algoritmas ir transformavimo taisyklių saugykla. Pagal pasiūlytą modelį sukurta programinė įranga, kuri leidžia atlikti xBase komandų transformavimą į SQL užklausas. Taip pat sukurtoje programinėje įrangoje įdiegtas ir papildomas funkcionalumas: duomenų bazės lentelių duomenų peržiūra, koregavimas, duomenų perkėlimas iš senų *.dbf lentelių į serverinės duomenų bazės lenteles. Sukurtas sprendimas palengvina sistemos perkėlimą iš navigacinės duomenų bazių sistemos į šiuolaikines kliento serverio architektūros sistemas veikiančias serverinių dbvs pagrindu. / The conversion problem of xBase commands into SQL queries is analysed in this work. Solution to conversion problem was proposed. It consists of two parts: conversion algorithm and conversion rules storage. A software for conversion of xBase commands into SQL queries was developed using the proposed model. Additional functionality was implemented in the software: viewer and editor of database tables, loader of *.dbf tables into servers database tables. A solution to facilitate migration from ISAM database to modern client-server DBMS systems was developed.

Typescript (photocopy).rev / Digitized by Kansas Correctional Industries / Department: Computer Science.

Typescript (photocopy). / Digitized by Kansas Correctional Industries / Department: Computer Science.

Typescript (photocopy). / Digitized by Kansas Correctional Industries

Typescript (photocopy).rev / Digitized by Kansas Correctional Industries / Department: Computer Science.

This thesis proposes some enhancements of the control and communication aspects of the implementation of a National Plan in any developing country. A cybernetic model for the viable system is used following the approach developed by Beer. Weaknesses of typical current practice are identified and a hierarchical organization, based on the model, is suggested as an alternative, in which all the systems implementing and monitoring the N. P. are considered as one single system, making its functions easier to recognize. Deficiencies, which are characteristic of the situation of developing countries, are identified and remedies are suggested to increase effectiveness. The model provides for the cybernetic principle of freedom, allowing the creation of autonomous subsystems with their own computational needs. A distributed system using micros, databases, and national communication networks, is described, which provides the requirements for realizing the suggested organization, together with packaged software to compensate for missing experience and know-how. The proposals are made in the form of a comprehensive package whose built-in complexity (sophistication) is very high. It is still effective even with inexperienced users but can take full advantage of their developing knowledge. This thesis includes listings and sample runs of some portions of the package which, for purposes of demonstration, have been implemented in dBASE II and an 8080 assembly program on an Intertec Superbrain QD microcomputer.

A computerized flow process charting application program of dBase III+ has been developed to aid in resource requirements planning and operations analysis. Traditional flow process charting has used as the following data elements: assembly number, assembly sequence number, distance travelled, time required for the activity and an activity symbol. The computerized system adds several variables to these in order to customize the application at Martin Marietta Electronic Systems. These additional variables include work center identification, machine number identification, lot sizes, set up and run times and manufacturing specifications. Additionally, the circle or operations symbol has been expanded to differentiate between manual, process and test activities. Resources requirements planning and analysis is accomplished by a series of reports where a user defines search requirements and enters three independent equation variables for the calculations. The three variables are realization factor or safety factor, resource availability in hours per month and monthly production demand. The resource requirements can be used in methods engineering, make-buy decisions and resource planning. Sensitivity analyses can be easily accomplished by changing the input variables and/or data.

no abstract provided by author / Master of Information Systems